1, Bluetooth 5.3; Chip: JL AC7006F42. Battery capacity: 90mAh; charging about 1.5 hours3. Use time: 8 hours; Standby time: 120 hours4. Product size: 121*104*35mm; weight: 13g5. Air conduction bluetooth earphones6. Support Chinese and English prompt tone: double-click the multi-function key in unpaired state