Information about this product Take out the automatic connection device, put it back into the charging compartment and automatically shut down and charge. C charging port, convenient for blind insertion, more efficient charging, and easy to carry. The bionic cochlea design truly restores the sound quality, showing soft music and making the sound full and powerful. Dual decoding mode, the sound quality is more stable, and the protection is more perfect. One-click to call the voice assistant, open the music player, make a call, open the navigation, and open the game. Bluetooth version: 5.1 Horn: 8mm Frequency response: 20Hz-20KHz Headphone battery capacity: 50mAh Charging compartment battery capacity: 800MAH Transmission distance: more than 10m Talk time: 4 hours Play time: about 6 hours Charging time: 1-2h Operation: touch Material: ABS Color: black Note: Light reflections and different monitors may cause the item in the picture to look slightly different from the actual one. Allowable measurement error is +/- 1-3 cm.