1. Material: ABS 2. The earphones cable is 90cm long, weight: 21g 3. Bluetooth version: 5.0, chip: BK 3266 4. Battery capacity: 130mAh, charging time: about 2 hours 5. Talk/music: 10 hours 6. Standby time: 200 hours 7. Large capacity battery, long battery life 8.Voice prompt switch：When not connected, double-click the multi-function button and there will be a beep