1. Bluetooth 5.3 chip: JL AC7006F4 2. Battery capacity: 400mAh, charging time: 2 hours. 3. Using time: 46 hours. 4. Size: 208 * 185 * 82mm, weight: 281g 5. Support Bluetooth, TF card, AUX playback 6. Support Chinese and English prompt sounds: Double-click the function key in the unpaired state.Chara..