1. Material: ABS+PC+Metal 2. Bluetooth version: V5.3 3. Communication distance: 10 meters 4. Music time: 50 hours (70% volume) 5. Battery capacity: 600mAh/2.22Wh 6. Rated input of headphones: 5V 600mA 7. Rated consumption current: 13mA 8. Charging time: 2 hours 9. Frequency response range: 20Hz-20kHz 10. Charging interface: Type-C 11. 40mm large speaker with bass enhancement technology to feel the surging music power 12. Soft sponge earmuffs that fit snugly to the ear and are comfortable to wear 13. Foldable design for convenient storage and carrying