Get a unique sound and a superior clarity
Higher quality when it comes to the clarity of the sound and that of the bass. It provides wireless freedom and the Bluetooth technology allows telephone connection.

The microphone is not properly functioning and there are often delays at the level of the Bluetooth technology. Also, there are some controls that are not compatible with iPhone.

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Sennheiser MM 400 Bluetooth Headsets
Enjoy great optimized hi-fi stereo sound
The new Sennheiser MM 400 Bluetooth headsets offer the possibility to both make calls and listen to music. With the help of an integrated invisible microphone, one can easily use MM 400 to talk in a comfortable manner. However, the microphone is full of surprises and this useful feature can become unusable at times. When it comes to how long can the headsets’ user talk, the product offers a talk time of around 20 hours.
The product also includes features and controls meant for playing games and watching video on the iPhone. As it is a full of surprises device however, MM 400 comes with difficulties when it comes to these activities too.
Sennheiser MM 400 is a great choice for those who travel a lot as it works both wireless or wired, in case of no Bluetooth accessibility. More than that, it can be compacted so that it won’t take too much space when carried. The German company Sennheiser did a good job with this model when it comes to portability, comfort while wearing the device and a great transmission signal, but failed to provide the product with the promised standards in terms of using it for communication.
Where to Purchase:
Check Out the the Amazon Website Here.
Technical Info:
Charging time: 3 hrs
Wi-Fi Range: 10 m
Weight: 105 grams
Technology standards: Bluetooth 2.1 + EDR / supported profiles: A2DP + AVRCP + HSP + HFP
MSRP: $349.95
See the Amazon website for Sennheiser MM 400 Bluetooth