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JBL Synchros E40BT

On-ear Bluetooth® headphones (Blue)

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  • JBL Synchros E40BT

    Front

  • JBL Synchros E40BT

    Earcup controls for music and calls

  • JBL Synchros E40BT

  • JBL Synchros E40BT

    Straight ahead view

Item #: 109E40BTL
 

Review Summary

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Our take on the JBL Synchros E40BT

by David Brown
JBL
JBL Synchros E40BT

Earcup buttons keep you in control of music and calls when you're listening wirelessly with the Synchros E40BT (shown in Red).

Bluetooth on a budget

You don't have to spend a lot of money to get headphones with Bluetooth wireless connectivity and good sound. The JBL Synchros E40BT delivers both at an impressively low price. They're cleverly styled, well built, and offer JBL's legendary sound, with PureBass technology ensuring your music has plenty of low-frequency power. Stow your smartphone in your pocket and listen wirelessly, using the the earcup controls to play and pause music, adjust the volume, or even take a hands-free call with the built-in microphone.

Wireless or wired listening

The Synchros E40BT run on a built-in rechargeable battery, which provides up to 16 hours of use. If your battery runs down, you won't be stuck without music. Simply connect the included headphone cable and keep listening in wired mode. Then, use your computer or a USB AC charger to get your headphones charged up for more wireless use.

Share a song wirelessly

One pair of E40BT headphones is cool. Two pairs can do something really cool. You can stream music to another pair of headphones wirelessly using JBL's ShareMe™ technology. This allows two people to listen to the same song from the same source at the same time. You can share music with any two pairs of ShareMe compatible headphones.

See more info on this item

Highlights:

  • 40mm dynamic drivers
  • Bluetooth 3.0 and A2DP connectivity for wireless music listening and phone calls with compatible smartphones
  • earcup buttons offer music, volume, and call controls for compatible Bluetooth connected smartphones
  • built-in earcup microphone with echo-cancellation for clear, hands-free calls with a smartphone
  • PureBass technology delivers low-frequency response with detail and accuracy
  • ShareMe technology allows you to stream music wirelessly to a second pair of ShareMe compatible headphones
  • includes miniplug headphone cable for wired listening (disables Bluetooth functionality)
  • earcups swivel and fold flat for easy storage
  • built-in rechargeable battery provides up to 16 hours of music listening
  • USB charging cable included
  • frequency response: 20-22,000 Hz
  • impedance: 32 ohms
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
General
Fit Style
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On-ear
Earcup Type
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Closed
Noise-canceling
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No
Bluetooth
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Yes
Frequency Response
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20-22k Hz
Sensitivity
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114 dB
Impedance
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32 Ohms
Weight
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7.23 ounces
Cord Length
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40"
Airline Adapter Included
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No
iPod Control
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Yes
Volume Control
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Yes
Built-in Microphone
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Yes
Parts Warranty
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1 Year
Labor Warranty
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1 Year
Product Research
What's in the box?

Download owner's manual

  • On-ear Bluetooth headphones (blue)
  • 50" Straight audio cable (straight 2.5mm plug on one end and a right angled 3.5mm plug on other end)
  • 40" Straight USB cable for charging (straight 2.5mm plug on one end and Type A USB plug on other end)
  • Quick Start Guide
  • Warranty sheet

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 open the box, verify contents, 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.

Features

Overview: The JBL Synchros E40BT Bluetooth headphones offer convenience and performance in one stylish and comfortable package. With ShareMe technology, you can even share your experience with another set of headphones. The E40BTs have a built-in Lithium-ion rechargeable battery that provides all day music playback capability. When the battery becomes exhausted, you can plug in the supplied auxiliary cable and continue listening.

Drivers: The Synchros E40BT over-the-ear headphones feature large 40mm drivers with PureBass performance in a lightweight closed design. The 32-ohm drivers give you crystal-clear stereo for enjoying your music or carrying on a phone conversation.

Bluetooth: The Synchros E40BT supports Bluetooth 3.0, with A2DP v1.3, AVRCP v1.5, HFP v1.6, and HSP v1.2. The left ear cup is equipped with a microphone featuring Konnexx echo-cancellation technology to give you a clean connection and clear, hands-free calling. The headphones are compatible with iPad (mini, 3rd and 4th gen), iPhone (5s, 5c, 5, and 4s), iPod touch, MacBook Air, MacBook Pro, Mac mini, Android 1.5 Cupcake to Android 4.4 KitKat, and Blackberry 1.0 to Blackberry 10 OS.

ShareMe: JBL's exclusive ShareMe technology lets you wirelessly and simultaneously share your music with another ShareMe-enabled headphone. When you are paired with a Bluetooth source device, you can then add a second pair of headphones and listen to the same source at the same time--a concert for two. ShareMe can be enabled using two E40BT headphones, a E40BT and an E50BT, or two E50BT headphones.

On-board Controls: The headphones' left ear cup includes a 4-way Multi-function Button (MFB) that lets you control your music playback and phone calls:

  • Press MFB up/down: Raises volume up or down
  • Press MFB forward:
    • Music: 1x play/pause; 2x next track; 3x previous track
    • Phone Calls: short press answer call; long press reject call; manage 2 calls at same time
  • Press and hold MFB forward: 1x fast forward; 2x fast reverse
  • Press MFB backward: ShareMe function

Battery: The built-in 3.7V Lithium-ion rechargeable battery (610 mAh) provides approximately 16 hours of music playback time, or 24 hours of phone talk time. The battery charges in approximately 3 hours via the included USB cable.

Specifications: The Synchros E40BT has the following specs:

  • Frequency Response: 20-22kHz
  • Maximum SPL: 114dB @ 30mW
  • Impedance: 32 ohms
  • BT Frequency Range: 2.402 - 2.480 GHz
  • Weight: 7.23 ounces
 
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JBL Synchros E40BT Reviews

Average Customer Review:

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4 out of 5

JBL Synchros E40BT

Written By MICHELLE, CENTRE, AL on Friday, September 12, 2014
Crutchfield Customer Review (What's this?)
 
The price for these bluetooth headphones is the selling point. I purchased these for my 11 year old daughter and they are awesome. They are definitely worth the money compared to it's counterparts and you won't be paying an arm and a leg for these as you would be for those.
Pros:
Price, quality of build, color choices
Cons:
I would like a little more bass but they are loud enough for my daughter.
Was this review helpful?    Yes | No
"Coolness Factor"
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4 out of 5

JBL Bluetooth Headphone

Written By DAVES, Virginia Beach, VA on Saturday, September 06, 2014
Crutchfield Customer Review (What's this?)
 
I like to use headsets especially when I'm going for a walk or working in the yard. I thought it would be nice not to have to fiddle with a cord especially when I'm trimming shrubs and the like around the house. Cords can easily get in the way and possibly cut by accident. I didn't expect the quality of the bluetooth sound to be as good as a corded set, but I was was very pleasantly surprised as how great these sounded. They also fit snug so they can be heard over lawnmower noise. I haven't tried using he phone setup yet. But, I'm very happy with the sound quality of music and audiobooks.
Pros:
Great sound. Outside noise is muted because of snug fit.
Cons:
They tend to fall off if you're bending over a lot picking things up while working in the yard.
Was this review helpful?    Yes | No
"Coolness Factor"
Build Quality
Comfort
Noise Reduction
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5 out of 5

Great Purchase !!

Written By Danny, 40065 on Sunday, August 31, 2014
Crutchfield Customer Review (What's this?)
 
I could not have asked for a better set of Bluetooth headphones . Sync with ease to everything I've tried as of yet . Great sound , and functions as they should .... Thanks yet again Crutchfield for another awesome purchase !!!
Pros:
None
Cons:
None
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"Coolness Factor"
Build Quality
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4 out of 5

JBL Bluetooth Headphones

Written By Webb, Mequon, WI on Sunday, August 31, 2014
Crutchfield Customer Review (What's this?)
 
Great value when compared to Bose
Pros:
Quality look and materials
Cons:
No noise canceling
Was this review helpful?    Yes | No
"Coolness Factor"
Build Quality
Comfort
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1 question already asked

can i use this for my tv which has wireless internet? [ Laila  Aug 15, 2014 ]
1 answer
  • We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Krissy Staff  Aug 18, 2014 ]

For a more in-depth review and enhanced detailed information on the JBL Synchros E40BT, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_109E40BTL/JBL-Synchros-E40BT-Blue.html ).