The Nokia Bluetooth Stereo Headset BH-905 is a Bluetooth stereo headset featured with the latest active noise cancelling  technology with 8 microphones for cancelling the background noise. The headset provides music enjoyment as well as the luxury of silence when needed an environment to relax.  BH-905 is also equipped with 2 microphones for capturing the speech and advanced digital  signal processing enabling clear communication even in noisy environments.