Skip Navigation

Bowers & Wilkins C5 Series 2

In-ear headphones with in-line remote and microphone

26 Reviews | 2 questions - 15 answers

Item # 749C5IIB

In Stock

 Ships FREE

Was: $179.99

Price break: -$30.00

Add to Cart

Ask an expert

Our VA-based experts can help.




Our take on the Bowers & Wilkins C5 Series 2

Fit is crucial to any pair of in-ear headphones, and not just for comfort and stability. It also ensures the best sound quality while isolating your ears from outside noise. Bowers & Wilkins has gone to great lengths to ensure that their C5 Series 2 in-ear headphones stay securely in your ears. These headphones feature B&W's innovative Secure Loop that expands to gently nestle against the inner rim of each ear, holding the headphones firmly in place. The earpieces also employ a solid Tungsten sound tube that balances them towards your ears, which helps keep them stable. An assortment of silicone ear tips helps you tailor these headphones to your ears, so you can get the most out of their superb sound. You'll be hard-pressed to find a more elegant-looking pair of in-ear headphones that offer a custom-feel fit alongside such rich sound.

B&W C5 Series 2 headphones

The C5 Series 2 headphones stay in your ears thanks to their innovative Secure Loop.

In-ears that really stay in

Fit is crucial to any pair of in-ear headphones, and not just for comfort and stability. It also ensures the best sound quality while isolating your ears from outside noise. Bowers & Wilkins has gone to great lengths to ensure that their C5 Series 2 in-ear headphones stay securely in your ears. These headphones feature B&W's innovative Secure Loop that expands to gently nestle against the inner rim of each ear, holding the headphones firmly in place. The earpieces also employ a solid Tungsten sound tube that balances them towards your ears, which helps keep them stable. An assortment of silicone ear tips helps you tailor these headphones to your ears, so you can get the most out of their superb sound. You'll be hard-pressed to find a more elegant-looking pair of in-ear headphones that offer a custom-feel fit alongside such rich sound.

Spacious, open sound

The original Bowers & Wilkins C5 in-ear headphones were widely acclaimed for their sound quality. Never one to rest on its laurels, B&W developed a new driver for their C5 Series 2 headphones, for sound that's more wide open and detailed, with more powerful bass response. The Mirco Porous filter on the end of each earpiece gives these headphones a distinctive look in addition to their role in delivering spacious, natural sound.

Remote and mic for Apple® devices

The C5 Series 2 headphones come with two miniplug cables: one straight cable, and one with a built-in remote and microphone. The three-button remote offers track and volume control for your iPhone®, iPad®, or iPod®. The microphone lets you take hands-free calls with your iPhone. The headphones also include a quilted zip-up carrying case for storage and travel.

Product Highlights:

  • in-ear design provides natural sound isolation
  • 9.2mm dynamic drivers for open, detailed sound and powerful bass
  • three-button remote for controlling music playback and volume with an iPhone, iPad, and iPod
  • built-in microphone on remote for receiving calls on an iPhone
  • adjustable ear loop holds headphones securely in place
  • Micro Porous Filter system for added spaciousness
  • 45" miniplug cable
  • includes assortment of silicone ear tips for optimum fit and sound quality
  • compact, quilted fabric storage case
  • frequency response: 10-20,000 Hz
  • sensitivity: 115 dB
  • impedance: 32 ohms
  • weight: 0.71 ounces
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • In-ear headphones (45" cable with in-line remote and microphone terminated by a male 3.5mm connector)
  • 4 Pairs of silicon single-flange ear-tips (XS/S/M/L)
  • Soft padded case
  • C5 Quickstart
  • Safety Instructions and Warranty booklet
  • Bowers & Wilkins product line booklet

Sounds awesome. Takes some playing around to get a comfortable fit. The highs do not fatigue my listening experience, and the sound remains well balanced. They are a very good option when I'm not utilizing my Focal over the ear cans.

Gregory, Toms River, NJ


Bowers & Wilkins C5 Series 2 Reviews

Average Customer Review(s):

(26 Reviews)

Good sound, terrible wire

john from Key west, FL on 4/20/2018

Crutchfield Customer Review (What's this?)

Amazing sound. Terrible wire. After about 6-8 months of use the wire started cracking, exposing the bare wire. They still work after 2 years, but I rarely use them because of the fragile wire. I have a few pairs of inexpensive earbuds with better wires. Fix the wire issue, then I'd give a 5 star.

Pros: Clear sound

Cons: Terrible wire falls apart

very solid sounding

Gregory from Toms River, NJ on 12/30/2017

Crutchfield Customer Review (What's this?)

Sounds awesome. Takes some playing around to get a comfortable fit. The highs do not fatigue my listening experience, and the sound remains well balanced. They are a very good option when I'm not utilizing my Focal over the ear cans.

Pros: Clean and well rounded sound

Cons: Take the time to get the perfect fit for best results

Good fit

Gary from Scarsdale, NY on 7/2/2017

Crutchfield Customer Review (What's this?)

These are very good quality earbuds. It is difficult for me to find earbuds that fit and stay in place. The loop design works for me. It didn't get 5 stars because they could use a little more bass.

Pros: Good fitting earbuds

Cons: Needs more bass.

Great sound!

Richard from New Orleans, LA on 1/7/2017

Crutchfield Customer Review (What's this?)

These earbuds sound better than any I've used previously. I got them to replace some Bose earbuds that had "disappeared under mysterious circumstances." I'd planned to get another pair of Bose, but decided to spend a little more money to try out the B&Ws. I'm very glad I did. Their clarity and range seem far superior to the Bose. The design is unusual with respect to how it fits in one's ears (as was the Bose, for that matter), but I found it easy to get used to.

Pros: dynamic range clarity fit

Cons: none

Bowers & Wilkins C5 Series 2

Crutchfield customer from Hillsboro, OR on 12/19/2016

Crutchfield Customer Review (What's this?)

These are very smooth sounding IEM's Base nice and prominent. It can get a little bit overwhelming if you into heavy Rap and EDM. On all other music. You will get that smooth B&W sound. It can handle most music that others at this price point can't. I have a pair of Focal Sphere's and when I use my amp. The distortions come comes through. These are my go earbuds when I want to use something very portable. Such as when I am out and about and sitting down having some lunch. Don't want to look to pretentious with bring out the big guns. These are my second pair and would give them 5 stars if the bass could handle a little more rap.



Bowers & Wilkins C5 Series 2

Crutchfield customer from Pompano Beach, FL on 12/11/2016

Crutchfield Customer Review (What's this?)

Excellent sound



Was hoping for more

Bob from Lodi, CA on 12/10/2016

Crutchfield Customer Review (What's this?)

These are well constructed and "bright" as others described, however I did not find them significantly better than much less expensive in-ear buds. I have used them with various sources to be certain, even using bass boost to see if these could deliver more. The cables are quite thin and as such far easier to tangle into tighter knots than others. Overall they were pretty disappointing and hardly worth the expense, nor what I expected from the reviews. I used a hair dryer to straighten out the cable kinks. I would not use the reference "in-ear headphones" as there is no comparison to the bass capacity of tried and true studio headphones.

Pros: Apparently well constructed. Ear-loop design does help hold in place.

Cons: Not much better than less expensive buds. Thin cables tangle easily. Time consuming to lock ear loops into place.

Crutchfield response on 12/12/2016 Bob, we're sorry you're disappointed with these headphones. Whenever you are not completely satisfied with anything you purchase from Crutchfield, please contact our Customer Support team. Purchases from Crutchfield can be returned or exchanged within 60 days of the purchase.

Bowers & Wilkins C5 Series 2

Crutchfield customer from Encinitas, CA on 10/24/2016

Crutchfield Customer Review (What's this?)

I like these headphones so much I bought a second pair for my wife. Bass is great.



Buds with better quality than some earphones

Daniel from Lyndhurst, NJ on 8/18/2016

Crutchfield Customer Review (What's this?)

I have tried many others ear buds but I have to say these are the best pair I could find under $250. Few others even come close. The build quality is great and the sound is powerful with strong but not over done bass.

Pros: Stays in almost any ear type securely Excellent, powerful sound Sound mostly doesn't leak

Cons: Ears might be sore after spending more than an hour with them on but not too much

Bowers & Wilkins C5 Series 2

Rick from Indianapolis, IN on 7/31/2016

Crutchfield Customer Review (What's this?)

I did not find these earbuds comfortable at all and the sound was very bright and not to my taste. I returned them immediately


Cons: Sound Comfort and fit Price

Bowers & Wilkins C5 Series 2

Michael from Vashon, WA on 7/30/2016

Crutchfield Customer Review (What's this?)

Excellent sound quality at a good price. Can be a slightly overdone on bass sometimes.



Sound great for its price

Chris from Houston, TX on 7/3/2016

Crutchfield Customer Review (What's this?)

Sound is very clear and tighter bass and very suitable for my iPhone.

Pros: Sound very clear and tighter bass. Good for Classical music

Cons: Not design for pop sound and not wireless

Clear mid high and lows

Ben S from Euless TX on 6/10/2016

Crutchfield Customer Review (What's this?)

Good sounding earphone, pleasant listening experience for hours

Pros: Great sound looks nice on ears good quality cable wearing this earphone need little practice after that its becomes easy to wear.

Cons: Pouch came with it is too small.

B&W delivers again

StephenT from Illinois on 1/7/2016

Crutchfield Customer Review (What's this?)

Once again Bowers & Wilkins proves their worth. Coming off of a previous pair of quality in ear Klipsch buds I had high expectations. B&W shattered them. Bringing in perfect comfort (when paired w foam inserts) and an extremely full sound all around. Punishing these ear buds through constant travel and hours upon hours of music I find myself here writing this review over 13 months after purchase still very satisfied. These ear buds may not be high end studio quality but for $175 it will be hard to find something that will outperform and provide with optimal comfort. Had the mesh peice pop off of back of left bud, no sound damage, super glued a month ago. No problems since.

Pros: Amazing balance of sound Durable Mic sensitivity

Cons: Mesh peice

Bowers & Wilkins C5 Series 2

PG from Connecticut on 9/29/2015

Crutchfield Customer Review (What's this?)

I have compared the wifi man 600 earbuds to these and found the sound quality to be clear in the bass range which I like for classical music. I am also a big fan of the cord in the ear as I never have to be concerned about the ear but falling out and the variations in size are enough for everyone. I also feel the sound has some dispersion or more air to it compared to the 600. I also like the phone answering and speaking feature you included which the 600 did not have. The volume has to be somewhat louder with these than the 600 but that is small technical difference. Overall I think for my tastes they are perfect.

Pros: 1. very good overall sound with good bass qualities and clear crisp vocals. 2.inner ear holder for me the winner.

Cons: Maybe the caliber of the cable could be slightly heavier like the 600 to prevent any wear and tear.

top notch

dave from Pennsylvania on 9/27/2015

Crutchfield Customer Review (What's this?)

real nice headphones. been a long time user of bose in-ear. these are a step above excellent sound and quality. ear loop took a little time to get used to but are real comfortable. noise reduction pretty good

Pros: Quality and fit

Cons: none

Pure Quality

MikeE from Florida on 8/23/2015

Crutchfield Customer Review (What's this?)

You can immediately see the quality of materials used. These sound very natural without over emphasizing any area of sound.

Pros: Many different earbuds to get a good fit. Great sound. Quality is everywhere.

Cons: Wish left and right was clearly marked

More than just Apple

VicM from California on 7/15/2015

Crutchfield Customer Review (What's this?)

While these ear buds are designed for use with Apple iPhone products I find them as an excellent choice for my HTC ONE M9. The M9 has audiophile capable 24 bit play back so you really need your buds to be top notch and the C5 s2's fit that need perfectly.

Pros: Build quality, tight bass.

Cons: None yet.


vma from Seattle, WA on 7/5/2015

Crutchfield Customer Review (What's this?)

Excellent build quality and looks. Sound is excellent from highs to mids and bass. Best earphones under $200!!!

Pros: Great sound, looks cool, build quality!


Quality sound

Michael from Columbus, Indiana on 6/16/2015

Crutchfield Customer Review (What's this?)

Some of the best ear buds I've ever owned. They feel great in your ears and sound awesome.



C5 series 2 dont get any better!

Big D from Amherst, NY on 3/31/2015

Crutchfield Customer Review (What's this?)

OMG, after having the earbuds that come with my iphone, ipod, etc, its amazing how much better sound quality and fit & comfort with a $200 bud. These are by far THE best in ear phones I have ever heard! I just recently returned the Sennheiser IE60s, which are by far no comparison!!!!!!!!!!! These really rock for $179! even better, I used my bonus pts and got em even cheaper, SWEET DEAL! do yourself a favor, don't bother with all the rest, THESE ARE WHAT YOU NEED, no need to spend any more $$$. Now, I must return to loving my music again! LOL

Pros: the best buds for under $200, and at least 3x over too ! excellent fit and noise cancelling! deep tight bass, but lots of clear midrange and highs!

Cons: nothing!!!!!!!!! Just buy these right now!

C5 series 2

Bill from Springfield IL on 3/6/2015

Crutchfield Customer Review (What's this?)

I also own the initial C5 earphones which are exceptional in their own right, however the redesigned 9.5 mm series 2 speakers are beyond my expectations. For the price these are some of best sounding in-ear earphones I've owned. They look exactly like version one so I won't bore you with the design, fit, and appeal all of which are superb. Now the sound. I could not believe the improvement over version one. The highs are crystal clear with no distortion, the mids are excellent with unreal efficiency. On to the bass/lows. In a word awesome. Even at high volume there is no distortion. The bass goes very very low and the finish is solid with no roll off. I dare say that it is almost as if you have a subwoofer in your head. These have to be some of the best balanced sounding in-ear buds I've had the pleasure of listening to. Some find these to be rather uncomfortable but with a little adjusting they should be fine. As with all B&W products the build quality is near perfect, they will sustain some abuse, in the gym workout they hold their own. The cord strain relief is great and they do not get tangled easily. I have ear buds from Klipsch, Polk Audio, Monster, Logitech. The Klipsch X10i are the only ones that come close to the B&W in sound and comfort but they are also nearly twice the cost than the B&W C5.I was very impressed with the soundstage the longer I listened to them. Anyway, you be the judge, everyone's listening taste is different. I believe that you will be was.

Pros: Design, sound, and price. If you decide on these give them around 24 hours to break in. I just plugged them in to my ipod, turned the volume up about half way and then walked away for a day or so, then I did some serious listening and only then I could rate them. The sound only gets better the longer you play them.

Cons: I don't have many cons. In my opinion the only con I can think of would be the case. I can live with that since they are in my ears more than the case they come in

Excellent in-ear earphones

ddelu from Florida on 11/24/2014

Crutchfield Customer Review (What's this?)

I have had the privilege of user a number of different in-ear earphones and so far, I like the fit, finish and sound of the C5 Series 2 phones. I've had no problem with their unique method of keeping them secure and the sound is what I prefer: some bass that's not overwhelming and highs that are not irritating. Good mids fill in the space between. I've compared these to another well known brand costing over $500 and these, in my opinion, sound much better.

Pros: Well made, comfortable fit, good overall sound

Cons: Should include a wider range of earpieces to get a better seal and better bass.

Best headphones I owned

Jesus from Huntington, NY on 11/16/2014

Crutchfield Customer Review (What's this?)

Best by far worth the money. I've had every companies headphones monster shure klipsch Bose. This product is better than bose. Klipsch the x11i was close but pricier.

Pros: It feels like I have a subwoofer in my ear.

Cons: My ears bleed if you listen at top volume. You also can't hear your wife for 24-48 hours so it may also be a pro

Possibly the best in ear for the price

Purplegold from California on 11/10/2014

Crutchfield Customer Review (What's this?)

The sounds are very well balanced without anything being over the top. Although, it would have been nice to bump up the vocals just a tad. It can get drowned out with some of the instruments, but not that big of a problem. At this point, I am nitpicking. Please, I beg you, do not consider buying these if you are listening to anything less than 256kbps. You will definitely notice the low compression rates. Your better off using the stock headphones if that's the case. These in ears will bring a new listening dimension to your music. The clarity will bring out the different instruments that you never thought were there before. These in ears are on the warm side with good bass to enhance the track and not muddy it up like other in ears. Comfort level is the only negative I have say about these. Your ears can hurt if worn for a while. It will differ for everyone. I believe that my ears are on the avg. side. But there are times where I have to play with it so that it gets a good seal and make sure it doesn't fall out. There have been times where I feel the earphones start to slip out while running. And other times, it just stays in perfectly. You definitely have to play around with it for sure. These are a great substitute for the P7's if you don't want to carry those behemoths around. Only the Bose IEM2i are more comfortable and lighter than these. I guess you can't always have it all. I also like the crescent shaped case that accompany these. Nice and small

Pros: Excellent highs, mids & lows Not heavy at all Elegant in design

Cons: Can be uncomfortable to wear if not put in correctly

The best hi quality ear bud for your dollar

dougseye from Honolulu, HI on 10/15/2014

Crutchfield Customer Review (What's this?)

This earphone lives up to all the hype. The series 2 is indeed an improvement over its predecessor, with better response at the high end. The bass continues to be remarkable for an earbud, with no hint of muddiness. I think the word "transparency" comes to mind when describing the sound quality. The wireloop design keeps the earbud in place and is quite comfortable for long listening periods. Whether you're listening to classical, jazz, or rock, you'll be pleased with the clarity across the sound spectrum. Oh, don't forget the fabulous price for what you get, as I've bought buds for $400 and $500 that weren't as good!

Pros: Fabulous response across sound spectrum. Price is great for what you get, outperforming products 2 to 2.5 times as costly. Wireloops hold in-ear phones in place nicely. Volume control and pause button on left ear cable works great for iPods and mic works for iPhones.

Cons: Wireloops can get uncomfortable after 4 hours or so, although I've gone to sleep with them in while my ear was pressed against the bed on one side.


Hands-on research

Features and Specs

Noise-canceling No
Bluetooth No
Mic For Taking Calls Yes
iPhone Control Yes
Lightning Connector No
Android Control No
Frequency Response 10-20k Hz
Sensitivity 115 dB
Impedance 32 Ohms
Weight 0.71 ounces
Cord Length 45"
1/4-inch Adapter Included No
Volume Control Yes
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research


Overview: The Bowers & Wilkins (B&W) C5 Series 2 in-ear headphones combine ingenious design, improved drive units, and a comfortable fit to provide a natural, open, and detailed sound. The C5 Series 2s come with four sizes of ear tips to make sure you find the perfect fit. The headphones have an in-line remote/microphone that is optimized for iPhones, iPads, and iPods. A padded zippered case is included for easy storage.

Drivers: The C5 Series 2 in-ear headphones feature redesigned 9.2mm (0.4") dynamic drivers that deliver controlled, powerful bass and detailed highs, so the sound is more open and natural.

Micro Porous Filter: To create a spacious sound, B&W uses a Micro Porous Filter, made of hundreds of microscopic steel balls. These act as sonic diffusers, opening up the sound and making music feel rich and expansive.

Secure Loop Design: Each ear bud uses an adjustable wire loop that fits comfortably in the inner ridge of your ear and helps hold the headphones in place. The inner casing features Tungsten weights to ensure the headphones are balanced towards the ear, not away from it.

Comfort-fit Ear Tips: The C5 Series 2 comes with four pairs of soft silicone ear tips in a variety of sizes, guaranteeing a comfortable fit and optimal noise isolation.

Made for iPhone/iPad/iPod: The C5 Series 2 headphones have a 45" cord with an in-line remote and microphone that is compatible with Apple iPhones, iPods, and iPads. The 3-button remote can control volume with the two outer buttons and playback/phone control with the center button. A single click of the center button will answer or hang up a phone call, and toggle between pause and play. Two quick clicks will skip the playback to the next song, while three quick clicks skips back to the beginning of the currently playing song. The remote and mic are supported by iPhone 3GS or later, iPad (all models), iPod touch (2nd generation or later), iPod classic (all models), and iPod nano (4th generation or later). The remote is also supported by iPod shuffle (3rd generation or later).


  • Frequency Response: 10Hz to 20kHz
  • Impedance: 32 ohms
  • Distortion (THD): <0.2% (1 kHz/1 mW)
  • Max Input Power: 3 mW
  • Sensitivity: 115 dB/V at 1 kHz
  • Weight: 0.71 ounces

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Product has great reviewed by trade professional [ R  Nov 19, 2018 ]
I've happily owned a surround sound system of DM 630 B&W speakers for 30 years and can't wait to try these in ear head phones. [ Kim  Jun 23, 2018 ]
B & W reputation and a suggestion from my brother. [ baron  Mar 20, 2018 ]
I had the Series 1 for several years and loved them. I recently lost them on a trip to Europe and needed to replace. I'm excited by the reported improvements is audio the Series 2 will deliver as the originals were excellent. This unit sounds great and is comfortable; I routinely wear them on 9 hour flights to Europe and 13 hour flights to Asia without any discomfort. [ Steven  Jan 15, 2018 ]
Love Bowers & Wilkins sound. Tired of wires when taking walks. [ Chalon  Jan 07, 2018 ]
Best earbuds I have ever owned. The musical highs are smooth and effortless, the bass are the most realistic full range and the best at lower range than all the others I have used. The ear-loop is comfortable to wear and keeps these in place. The noise reduction eliminates intrusion of almost all environmental noise. These are a must if you like music, and hate cheap sound, you will not be disappointed with these.. [ David  Dec 19, 2017 ]
I have an old pair of the original C5 love them but after 5 years of daily use one wire has a short in it. [ William  Sep 11, 2017 ]
Great audio quality. Multiple ear gels and adjustable cord means even people with small ears like mine can find a great fit. [ Katherine  Sep 04, 2017 ]
Have the Bowers and Wilkins system in my car and love it! [ Randy  Jun 26, 2017 ]
Mostly based on the reviews. The price break sealed the deal. [ Gerhard  Jun 18, 2017 ]
Curiosity of quality. [ baron  May 01, 2017 ]
Crutchfield recommendations [ stevenson  Apr 20, 2017 ]
because I love BOWERS & WILKINS SPEAKERS & I read the review in sound & vision before i buy anything . [ Erick Gabriel  Apr 19, 2017 ]
I wanted a pair that can deliver really strong bass. [ ARON  Apr 14, 2017 ]
Review [ PETER  Dec 01, 2016 ]
These earbuds are very favorably reviewed all over the Internet. The combination of Bowers & Wilkins quality ( I've owned a pair of their speakers for many years ) and Crutchfield service made them an easy choice. I'll follow up with a review after I audition them. [ PAUL T  Nov 17, 2016 ]
After researching on the internet these earphones were highly recommended. They work great! [ Zona  Oct 20, 2016 ]
Alas, returned these. Was choosing between Sennheiser M2 IEi and these. B&W, while a very respectable brand, lost ground with me with this product. I really tried to work with these, but poor fit coupled with moderate performance, did not justify the cost. I'm sure other may have had different successes with these. [ Michael  Oct 05, 2016 ]
I have been looking for a good quality in ear headphone for quite some time now. This particular item has gotten very good reviews at a reasonable price. [ Barry  Aug 04, 2016 ]
My husband said they were good and he did all the research. They were a present for my Dad and when they arrived and he started using them he LOVED them and was very happy with his present [ melisa j diaz  Mar 21, 2016 ]
I've been looking for new earphones that meet my standards for sound quality and durability. I sat next to a professional sound engineer on a plane yesterday, and he recommended these. I realize I'm taking a bit of a chance, going on the advice of someone I don't know, but will be happy to write a review from my own experience once I've used them for awhile. [ Lauretta  Feb 02, 2016 ]
Reviews and the compare feature on your website. [ Aimee  Dec 09, 2015 ]
Design and customer reviews [ Kevin  Dec 07, 2015 ]

2 questions already asked

My Bose SoundSport in ear headphones have performed well in sweat environment, but I have not worn them in rain other than a drizzle. Great sound, handy package carrying case. Patrick T [ PATRICK  Jun 10, 2015 ]
I have the Bose SoundSport ones. Yes I think they are weather resistant. I've had them for a year now, that stay put in your ear. I use them in hot and cold hiking in the parks. [ John  Jun 10, 2015 ]
own the Bose. Definitely sweat resistent since I bought them after using the Bose QuietComfort 15 at the gym and having to require 2or 3 replacements when the ear located electronics rusted out. Have never used them outside in bad weather but would expect no problems. What [ Brian  Jun 10, 2015 ]
This is actually my second pair. The first pair lasted me about two years before they needed to be replaced. Since they have a two year manufacturer warranty they replaced them with a brand-new pair I work out with them on a daily basis and they have fantastic sound quality and a great seal. I'm not a runner though I use the stationary bike and elliptical. I used the Bose and could not get a comfortable fit. I returned them. Hope this helps. [ JAMES  Jun 10, 2015 ]
I'm pretty sure that the Bowers and Wilkins are not sweat resistant. I certainly wouldn't exercise with them although they are excellent. [ Fred  Jun 10, 2015 ]
I have no problem with the C5-2 staying in my ears as a matter of fact they stay better than any other ear bud I ever used. [ FRANK J  Dec 16, 2014 ]
I've used both the original and the Series 2, and there is no appreciable difference between the two in terms of wearer comfort. The earbuds themselves are a little lighter, but the tips and the loop are identical. I'm one of the 3 people in the world the C5s fit perfectly, so I'm happy about this, but if the C5s didn't work for you, the Series 2 will be no different. Sorry! [ Daniel  Dec 15, 2014 ]
Same - I can't detect any real change to the form factor other than wire color... [ Mani  Dec 15, 2014 ]
Terrible. I sent them back. [ TODD  Dec 15, 2014 ]
The new C5 has the same design. It is a bit of a problem. Try lodging the wire loop under your ear ridge if you can. I make the loop as big as possible before insertion, then guide it under the edge of my ear ridge. I then push the ear bud in to get a good seal. If it's really a problem, consider using a small bit of moldable silicone earplug to temporarily secure the earpiece. Hope this helps. Dought T. [ Douglas  Dec 15, 2014 ]
I haven't used the original c5, but with the series 2 I was able to get it to fit after playing with the various size stoppers. It will not fit as perfectly as the bowers Wilkins website would have you believe, but they do stay snug with good isolation once you find the right buds. [ Mufaddal  Dec 15, 2014 ]
I have never used the original C5 but I do have a pair of the newer Series 2 version. I have had no issues with the earpieces staying in my ear and the wires seem to stay in place and their retention system seems to work quite well. I also like the balanced sound. Every ear is different so do your research. I did mine and so far I'm pleased. [ DONALD F.  Dec 15, 2014 ]
I have not owned the original C5, however, the series 2 still becomes loose in the ear while moving around. Another issue that contributes to the problem, is the cable is too short and constantly needs to be adjusted. [ JAMES A  Dec 15, 2014 ]
Tillman, I can't comment on the C5 as I've never used them. But from my experience with the series 2, I haven't had issues with them staying in my ear. The ear tips and the loop do a good job of securing it inside of my ear. The only time I find the earphones slipping out is when I'm working out. I think the sweat and constant running is a big part of that. But if you are just sitting or walking then you should have any issues with them staying in. You might want to try different tips to create a more secure fit. Also, I've heard from blogs that the series 2 ear loop is more malleable then the first release. [ MATT  Dec 15, 2014 ]
Hi, I used to have the C5 and now have the C5S2 and can not tell any difference in the fit or in rear retention [ MARKUS  Dec 15, 2014 ]