Mobile Stereo




The MM400 is a state-of-the-art Stereo Bluetooth® headset for multimedia mobile phones.

With one press of a button, you can switch quickly 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.

Feature Overview
  • Wireless freedom - Bluetooth® 2.1 guarantees hands-free convenience without wires and the advanced A2DP profile for Stereo Bluetooth® delivers optimised hi-fi stereo sound
  • Invisible microphone - with high-performance sound quality for clear conversations
  • Direct cable option - for use on airplanes, with an airline adapter included
  • Easy headset controls - in one intuitive cluster
  • Sennheiser sound quality - hi-fi headphone drivers ensure superior dynamic range, detail and excellent bass
  • Wearing comfort - padded ear-cushions provide an excellent soft fit, even on long trips
  • Easy-2-go - the headset folds into a compact bundle for travel and storage, while the headband is metal-reinforced for durability
  • Flexible - replace the battery with a spare on long trips - or recharge it via the USB port on your laptop or the supplied lightweight wall charger with different plug fittings for Europe, the USA, the UK and Australia
  • Connect everywhere - to mobiles, laptops, MP3 players, or in-flight entertainment systems with an all-in-one headset solution
  • Peace of mind - thanks to the 2 year international warranty

Download Fact Sheet