1. BT v5.3. Chip: JL AC7006. 2. Battery capacity: 800mAh, charging about 2.5 hours. 3. Use time: 120 hours. Standby time: 1200 hours. 4. The total length 96cm. Weight: 50g. 5. Supports BT, TF card (≤32G) playback. 6. Supports Chinese and English prompts: double-click the multi-function key in unpaired mode. 7. 800mAh battery, 120 hours of use, fast charging only takes 2.5 hours.