Bluetooth 5.3 chip: JL AC7006F4 2. Battery capacity: 350mAh; Charging time: 2 hours 3. Use time: 40 hours 4. Size: 194*187*77mm; Weight: 163g 5. Support Bluetooth, TF card, AUX playback 6. Support Chinese and English prompt sounds: double click the function key in the unpaired state
