Hear more of your music and calls with low noise great sound and wireless or wired options for maximum mobility. ; ; The BH-905i a high end stereo Bluetooth headset with active noise cancellation. The headset has a 'band-over-the head' with ear-muffs' form factor with music volume and calling controls on the two ear pieces. The headset has ten microphones; two for capturing speech and eight for capturing sound for the active noise cancellation functionality. The headset can be connected via Bluetooth or a wired 3.5mm connection with adaptors for 2.5mm 6.5mm and airplane connectors included in the box. ; ; The Nokia Bluetooth Stereo Headset BH-905i with active noise cancellation combines two in one - both music and calls - and provides crystal clear sound by eliminating background noise with novel active noise cancellation technology from Wolfson Microelectronics a leader in high performance audio technology. This multi-microphone feed-forward active noise cancellation technology allows for pure sound without ambient noise and is now introduced for the first time in the Nokia Bluetooth Stereo Headset BH-905i. ; ; The overall music experience with this new headset is second to none thanks to the revolutionary noise cancellation technology. The headset is set apart also through the ability to make phone calls as switching between music and calls has been made easy with integrated call control. ; ; The headphones also come with a VoIP adapter which allows you to make calls from your computer. ; ; What's In The Box: ; Nokia Bluetooth Stereo Headset BH-905i ; Nokia Carrying Case CP-511 ; Nokia Audio Cable CA-143U with 3.5mm Nokia AV connector (1.2m) ; Nokia Audio Cable CA-182U with 3.5mm iPhone compatible connector (1.2m) ; Nokia Extension Audio Cable CA-144U (1.7m) ; Nokia AV Adapter AD-52 for 2.5 mm Nokia AV ; Nokia Audio Adapter AD-63 for standard 3.5 mm jack ; Nokia Adapter AD-71 for airplane ; Nokia Adapter AD-70 for 6.3 mm home stereo ; Nokia Audio Adapter for Voip AD-77 ; Nokia Charger AC-15 ; User guide