Feature:1. Dual Connection: The hands free speaker supports two mobile phones to connect and jointly control the speaker playback at the same time.2. Handsfree: Support bluetooth mobile phone navigation reminder broadcast, music playback, etc., quick link, easy to opereate, free your hands.3. Practical: One click answering and number broadcast to incoming calls, no need to hand held the telephone, double click to replay, to ensure driving safety.4. Vibration Sensor: Vibration occurs when the door is opened, and the car Bluetooth will automatically turn on and connect with the mobile phone.5. Powe Saving: The bluetooth wireless transmission range up to 10 meters, after getting off the car beyond the range within 5 minutes will automatically shut down, greatly saving power.Specification:Item Type: Car Bluetooth SpeakerMaterial: ABSBluetooth: 5.0Bluetooth Protocol: HFP, HSP, A2DPWireless Range: 0-10 metersBattery Type: Built in 550mAh lithiumion batteryCall Duration Time: About 10 hoursStandby Time: About 500 hours.Package List:1 x Speaker1 x Back Clip1 x Power Adapter1 x Data Cable1 x Manual