1) Bluetooth Handsfree Car Kit 2) Full duplex , noise and echo cancellation, DSP technology 3) Portable handy size for using on desktop in office or at home, or event traveling with you 4) Flexible built-in rechargeable battery 5) Sun visor bracket fix the handsfree to the sun visor easily 6) Standby time: Up to 300 hours 7) Talking time: Up to 8 hours 8) Dimensions 95MM X 70MM 9) Weight: 130g 10) Bluetooth Version 2.0 compliant