Nokia Stereo Bluetooth Headset BH-905i

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I n t r o d u c t i o n
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Profile (HFP) 1.5, Advanced Audio Distribution Profile (A2DP) 1.2, and 
Audio Video Remote Control Profile 1.0. Check with the manufacturers 
of other devices to determine their compatibility with this device.
■ About active noise cancellation
Wolfson AudioPlus
TM
 Ambient Noise Cancellation technology uses 
patented signal processing technology and advanced acoustic design 
expertise to deliver class-leading active noise cancellation for stereo 
headsets and headphones.
This novel feed-forward technology cancels more decibels of noise 
across a wider frequency range than traditional feedback technologies, 
providing a peaceful and tranquil environment for users wherever they 
happen to be. As Wolfson's advanced technology does not process the 
playback audio stream, your music comes through in untouched hi-fi 
quality stereo.