1, Bluetooth 5.3; Chip: JLAC7006-2. Battery capacity: 400mAh, charging for about 2 hours-3. Use time: 40 hours; standby 200 hours-4. Material: ABS；Size: 19317076mm; Weight: 193g-5. Support Bluetooth, AUX, TF card mode-6. Support Chinese and English prompts: double-click the M key in unpaired state