DESC: Classic design that suits most car interiors. Easy installation. Adjustable neck mechanism. High audio quality. Headset for private conversations. Model: HHF-601. Size: 470 x 230 x 30 mm. Weight: 330g. Talk Time: Up to 10 hours. Standby Time: Up to 650 hours. Charging Time: Within 9 hours. Speaker: 2pcs, 2 x 1W. Operating Range: Up to 10 meters. Power on/off. Volume control/mute. Answer/end/reject call. Last number redial.Voice dial active (when supported by mobile phone). Bluetooth connection active, call status and battery low indicated by LED. Automatic reconnection to the last user. Automatic reconnection at power on and disconnect at power off . DSP (Digital Signal Processor) for echo cancellation and noise reduction. Compatible with: All Cell Phones/Smartphones that have bluetooth enable