-------------Product Feature----------------
1. Bluetooth 5.3, chip: JL AC6973.
2. Battery capacity: 250mAh for charging case, 25mAh for headset.
3. Use time: 3.5 hours, standby time 150 hours.
4. Size: 58*43*24.5mm. Total weight: 39g.
5. Support master-slave switching, summon Siri.