Product Description 

With the MM 550 you can switch between calls and music -- delivered in superb stereo sound as only Sennheiser knows how-- without wires! Luxurious, around-the-ear cups powered by NoiseGard 2.0 eliminates up to 90% of background noise for an incredibly relaxing flight. A convenient TalkThrough function lets you carry a conversation with a seatmate (or teammate) at the push of a button. Selectable SRS surround simulation adds excitement and depth to your audio on-demand. 

The invisible microphone ensures that you have the added convenience of taking a call without wires, or hassles-- without changing headsets. Using a closed, around-the-ear design to block ambient noise, the MM 550 is an ideal companion for the frequent flier or baller. Advanced DuoFol transducers provide the kind of detail and frequency response you would expect from Sennheiser. 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 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 super quality headphone is required. 

Technical Specifications 

Wearing style: Circumaural 
Technology: Bluetooth 2.1 + EDR / supported profiles: A2DP + AVRCP + HSP + HFP 
Talk time: 20 h without NoiseGard 
Listening time: 10 h/8 h without/with NoiseGard 
Charging time: 3 h 
Range: 10 m 
Weight: 179 g 
Frequency response: 15-22000 Hz 
THD, total harmonic distortion: Less than 0.1% at 1kHz 
Sound pressure level (SPL) 107 dB (1kHz, 1mW) 
Microphone: 100 - 10000 Hz 
Pick-up pattern: Omni-directional 

Package Content 

1 MM 550 TRAVEL 
1 USB wall charger 
1 In-flight adapters 
1 3.5mm audio cable 
1 Carry case 
1 User manual