1. Bluetooth version: V5.3+EDR 2. Play time: about 8 hours 3. Battery capacity: 300mAh 4. Frequency response: 20HZ-20KHZ 5. Rated power: 25mW 6. Drive unit: 40mm 7. Input: 5V/200mA 8. Standby time: 30h 9. Charging time: 2h 10. 10-meter stable connection, high-speed and stable transmission, no lag in music videos 11. 40mm high-precision dynamic sound unit, shocking bass 12. Foldable storage, more convenient to carry 13. Made of fully ear-covering protein leather, skin-friendly, soft, light and breathable 14. Support ANC active noise reduction