Feature:1. Support private answering.2. Answer / end call / reject a call.3. Broadcast the incoming phone number.4. Support transfer music from application programs.5. Built-in DSP noise suppression and echo cancellation.6. Double click hands-free key, redial the last phone number dialed.7. Equipped with 2W high-fidelity speaker and high sensitivity microphone.8. Supports English voice prompts, connects two phones simultaneously.9. If you use the redialing function of the car kit when the car kit is bluetooth connected with two phones at the same time, the car kit will default as the one that is playing music.Specification;Material: ABSColor: Black,WhiteWorking Voltage: DC 12Vbluetooth Version: V4.0+EDRCharging Time: 2.5 hoursTalking Time: Up to 20 hoursIndicator: Blue / Red LEDBattery: Lithium 3.7V , 650mAhStandby Time: About 1000 hoursOperating Frequency Range: ISM (2.4-2.48GHZ)Supported bluetooth Mode: HFP, HSP, A2DPbluetooth Connectivity Range: 10 metersPackage Included:1 X bluetooth Speakerphone2 X Metal Brackets1 X Car Charger1 X USB Charging Cable1 X English Manual