Going somewhere? Don't forget your Sennheiser MM 400 portable headphones. They're fantastic for enjoying your music and managing your phone calls without getting tangled up in cords. Built-in Bluetooth technology lets you make a hassle-free wireless connection to compatible devices, such as many cell phones, laptop computers, tablets, and MP3 players. You can even use the integrated volume, track skip, and call answer/end buttons on the right earcup for convenient operation while your phone or music player remains safely in your pocket, purse, or backpack.
Great comfort, sound, and convenience
The MM 400's soft padded ear cushions and adjustable headband provide a comfortable fit for hours of relaxed listening, making these 'phones great to have on long trips. The headset's folding design makes for easy storage when you travel. Sennheiser's patented Duofol diaphragms deliver detailed, crystal clear sound. And just in case you need it, Sennheiser includes a cable plus an airline adapter for a direct wired connection in situations where Bluetooth isn't permitted, or you want to make use of in-seat entertainment and other wired sound sources.
From the review Sennheiser MM 100 and MM 400 Bluetooth headsets: A family review of a headphone family
"I found the MM 400's light enough to wear for extended periods without any ear fatigue. The open-ear design gave the performance an airy, open feel..."
Marshall, Crutchfield A/V Writer