Features: brand new and high quality High-performance version Bluetooth-compatible chip V5.0+EDR, stable output performance. Omni-directional microphone design, calls are as clear as face-to-face. Full voice broadcast, never miss any calls. Automatic switch machine, labor-saving and worry-free. for Apple Siri voice control. 550mAh battery, 500 hours of battery life. Continuous talk for time about 10 hours. Built-in digital amplifier greatly enhances volume and sound effects. Advanced multi-point connection, support two mobile phones online at the same for time. Built-in DSP noise suppression and for echo cancellation (CVC8.0 dual noise reduction technology). Specifications: Bluetooth-compatible version: V5.0 + EDR Battery type: 550mah Color:Black Charging time: 2 hours Call time: 10 hours Standby time: up to 500 hours Bluetooth-compatible transmission distance: 10M Speaker: 42W, high-definition stereo Size: approx. 100x60x21mm/3.94x2.36x0.83in Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm. Package includes: 1 x Bluetooth-compatible 5.0 Car Kit 1 x Micro USB charging cable 1 x Visor Clip 1 x User Manual