High-performance version of Bluetooth chip V5.0+, stable output performance Voice prompt throughout the journey, never miss any calls Automatic switching machine, save effort and worry for Siri voice control 600 mAh battery, 500 hours of battery life The continuous call time is about 10 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 reduction and cancellation function (CVC8.0 double noise reduction technology) Bluetooth transmission distance: 10M Speaker: 4 ohm2W, high-definition stereo sound Color: black Material: ABS Size: 8.5 x 8 x 2cm Package Contents: 1 x Bluetooth Car Kit 1 x USB Data Cable 1 x Steel Clip 1 x Car Charger Adapter Only the above package contents, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.