1. High-performance version of Bluetooth chip V5.0+, stable output performance 2. Voice broadcast throughout the whole journey, never miss any calls 3. Automatic switch machine, save effort and worry 4. 600 mAh battery, 500 hours of battery life 5. The continuous talk time is about 10 hours Charging time:about 2 hours Talk time:about 10 hours Standby time:up to 500 hours Built-in digital power amplifier, greatly increase the volume and sound effect Advanced multi-point connection, support two mobile phones online at the same time Built-in DSP noise suppression and cancellation function (CVC8.0 dual noise reduction technology) Bluetooth transmission distance:10M Speaker:4ohm2W, high-definition stereo sound Colour:Black Material:Plastic+Metal Size:85x80x20mm Package Contents: 1 x Bluetooth car kit 1 x USB cable 1 x steel clip 1 x car charging adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.