"Great Sounding" Bluetooth Headphone with Active Noise Reduction
Sennheiser's MM 550 is a road-worthy headphone that lets you do it all. You can listen to music wired or wirelessly, take calls over Bluetooth, cancel 90% of ambient noise, and chat with seatmates… all without removing the headset.
"Great sound," reports LaptopMag.com. "Its versatility alone will be worth the steep price for many."
Using a closed, around-the-ear design to block ambient noise, the MM 550 is an ideal companion for the frequent flier or commuter. Advanced DuoFol transducers with neodymium magnets provide the kind of detail and frequency response you would expect from Sennheiser. The easy-to-use control panel is intuitive. In fact, it's so simply that you can operate it with your eyes closed – which is a common way of enjoying Sennheiser's world-famous sound quality.
NoiseGard 2.0 Noise Reduction Technology
Luxurious, around-the-ear cups powered by NoiseGard 2.0 eliminates up to 90% of background noise and delivers an audiophile, neutral sound quality that represents the truest reproduction of the original mix. A bass-enhanced normal listening mode is available when NoiseGard is bypassed. SRS WOW HD™ technology provides impressive clarity and stronger bass The selectable SRS surround simulation adds excitement and depth to your audio.
With the MM 550, you can switch between calls and music delivered in superb stereo sound as only Sennheiser knows how – and without wires! The invisible microphone ensures that you have the added convenience of taking a call without wires, without hassles, and without changing headsets. With TalkThrough technology, one press of a button activates an external microphone for conversation without removing the headset.
The MM 550 folds up to fit in any carry-on. The replaceable battery charges via USB or a wall adapter. For situations where Bluetooth is not permitted, you can use the included audio cable for a direct connection, making the MM 550 at home in any situation where a quality headphone is required. | 
