Adopt 2.4GHz Bluetooth version and transmitting distance is beyond 10M - Features 1.8" LCM screen display - Caller ID and name display (English) - Able to save the incoming phone numbers - DSP technology Full duplex noise and echo suppression - Built-in high intelligent microphone and powerful speaker - Can scroll 20 groups of incoming calls store 600 groups number - Key function: Volume Control/Answer Call/End Call - Power Supply: Built-in 1500mAh lithium battery or car cigarette charger - Solar charging stick on the windscreen to charge - Also can charged by car charger (DC 12~24V) - Talk time: 9 hours (manufacturer rated) - Stand by time: 5 days (manufacturer rated) - Packaging includes: - 1 * Bluetooth Handsfree - 1 * Car charger (12~24V) - 1 * USB cable - 1 * Mounting holder - 1 * English user manual