1.  Bluetooth 5.3; Chip: JLAC7003F42. battery capacity: 400mAh; Charging time: 2 hours3. use time: 46 hours; Standby time: 200 hours4. size: 190*169*80mm; Weight: 163g5. support Bluetooth, AUX and other modes6. Prompt tone in English and Chinese is supported: Double click the power button in unpaired state.