Intelligent, versatile, and elegant: the Nokia Bluetooth Headset BH-900 is an ideal handsfree solution for those who demand quality, style, and clarity. With the latest technology, including digital signal processing (DSP) and a sliding boom microphone, this headset delivers superior performance. Key Features: Classic style with Bluetooth wireless technology, available in dark grey with chrome-colored boom Unique sliding boom lets you adjust for the best audio to microphone performance Initiate Push to talk calls from the headset DSP with noise reduction and echo cancellation enables high audio quality?even in noisy environments Elastic earhook fits comfortably over either ear Individual buttons for: answer/end, volume up/down/select, and power on/off Other accessible call-features: hold, mute, voice-dialing activation, and redialing Up to 8 hours of talk time and up to 180 hours standby