1. Material: ABS.2. BT 5.0, chip: Pixart PAU16033. Battery capacity: 130mAh, charging time is about 1.5 hours.4. Talk/music time is 4.5 hours, standby time is 100 hours.5. Net weight: 34g.6. Waterproof performance: IPX7 level.7. Support Chinese and English prompt sound: when not paired, double-click the multi-function button and there will be a prompt sound.