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From Our Research Team:

Listen, Talk, Tune Out Noise!

You're not going to believe these headphones! Sennheiser didn't just build amazing noise-canceling technology into the MM 450 'phones. And they don't just give you wireless convenience. You actually get built-in Bluetooth — complete with an "invisible" microphone! That's right; you can make and take calls, listen to music, and block out up to 90 percent of background noise, all from one set of headphones! When you want to talk to the person next to you, simply use the TalkThrough function for easy conversation, and you won't have to remove the MM 450s.

Whether you're on the plane, on the bus, or in the car, you'll definitely appreciate how well Sennheiser's MM 450 headphones work. They're incredibly easy to use, and they sound absolutely fantastic. You want comfort over the long haul? MM 450s stay comfortable even during the longest flights or rides. If you want to plug into your favorite player, you can; these versatile 'phones also function as wired headphones.

Best of all, you get Bluetooth technology built right in. Take calls, carry on conversations via the built-in "invisible" mic, and hear what you need to hear even if you're in the middle of a crowd. When it's time to recharge the MM 450's onboard battery, simply plug into a USB port or use the included wall adapter. Now that's convenience! These do-it-all headphones make listening a pleasure — in any environment.

Sennheiser MM 450 Noise-Canceling Wireless Headphones with Bluetooth Features at a Glance:

• Sennheiser NoiseGard 2.0 technology for up to 90 percent active noise cancellation
  
• TalkThrough function for easy conversation, without having to remove the headphones
  
• Stereo A2DP Bluetooth
  
• Discrete "invisible" microphone
  
• Direct cable option
  
• Compatible with iPhone/iPod/iPad, as well as ⅛" headphone plugs
  
• Easy-to-use, easy-to-reach controls
  
• Patented DuoFol transducer system
  
• Plush ear cushions for ambient noise reduction and long-term comfort
  
• Collapsible headset for convenient portability
  
• Replaceable battery charge via USB port or supplied wall adapter
  
• Rugged construction, 2-year international warranty

Sennheiser's game-changing MM 450 headphones are your all-in-one listening solution!

Specification Detail Open/Closed Closed Fit Style Supra-aural (On Ear) Frequency Response 15Hz-22kHz Plug Size 1/8" Weight .24 lbs. Notes Wireless via Bluetooth 2.1/Noise Cancelling Manufacturer Part Number 502891

What Does "Special Order" Mean? A special-order product is one that we don't normally keep in stock. We order it from the manufacturer as soon as you order from us. We have great relationships with all the manufacturers we carry, so we can get your special order to you as fast as or faster than anyone else. Remember that special orders are non-returnable and non-cancelable, so make sure the item is right for you. A Sweetwater Sales Engineer can help you decide - call (800) 222-4700 for assistance!