The MM 400 is a state-of-the-art Stereo Bluetooth headset for multimedia-capabile mobile phones.

With one press of a button, you can quickly switch between calls and music delivered in superb stereo sound. The invisible high-performance microphone ensures that conversations are clear, making this headset the perfect all-in-one sound solution for your digital lifestyle. 

Using a closed, on-the-ear design to block ambient noise, the MM 400 is an ideal companion for the urban commute or frequent traveller. Advanced DuoFol transducers provide the kind of detail and frequency response you would expect out of hi-fidelity audiophile speakers. The easy-to-use control panel is intuitive and simple enough to operate with your eyes closed-- a common way of enjoying Sennheiser's world-famous sound quality.

The MM 400 folds up for the ultimate in portability. The replaceable battery charges via USB or a wall adapter. For situations where Bluetooth is not permitted, you can use theincluded audio cable for a direct connection- making the MM 400 an extremely capable wired headphone as well.

Features

• Wireless freedom with Stereo A2DP Bluetooth-- hands-free convenience and hi-fi stereo sound
• Discrete, invisible microphone is always out of the way
• Direct cable option listen as a wired headphone when Bluetooth is not permitted
• iPhone/iPod/iPad compatible, compatible with all 1/8" (3.5mm) headphone plugs
• Easy-to-use controls are within optimum reach and provide concise "click" feedback
• World-famous Sennheiser acoustics from patented DuoFol transducer system
• Plush ear cushions seal out ambient noise while maintaining luxurious comfort for hours on-end.
• Collapsible headset stores in a compact footprint for convenient portability
• Replaceable battery charges via USB port or supplied wall adapter
• Connect everywhere to mobiles, laptops, MP3 players, or in-flight entertainment systems with an all-in-one headset solution
• Built-tough with a 2-year international warranty