Features: 1. Voice can be opened to enroll in Chinese or English. 2. One button operation to achieve answer, redial, reject, hang up, and support for voice dialing. 3. Store the final answer of 10 phone numbers. 4. Built-in noise reduction and echo cancellation. 5. Multiple charging methods including solar power, cigarette lighter and USB charging. 6. Can be connected to two phones and answer the phone that is called. 7. High quality Li-ion battery, standby time up to 300 hours. Specification: Material: ABS Color: Main black Bluetooth Version: V4.0 Working Frequency: 2.402-2.48GHz Battery Capacity: 800mAh Talking Time: 8 hours Standby Time: > 15 days Charging Voltage: DC 5V Charging Time: 3 hours Memory: 8 Bluetooth pairing records Supporting Protocol: HSP HFP A2DP AVRCP Weight: Approx. 221g Package List: 1 * Hands-Free Speakerphone 1 * Car USB Charger 1 * Holder 1 * Clip Buckle 3 * Suction Cups 1 * User Manual 1、1. Voice can be opened to enroll in Chinese or English. 2、2. One button operation to achieve answer, redial, reject, hang up, and support for voice dialing. 3、3. Store the final answer of 10 phone numbers. 4、4. Built-in noise reduction and echo cancellation. 5、5. Multiple charging methods including solar power, cigarette lighter and USB charging.