1. Bluetooth protocol: V5.4 2. Transmission range: 10m 3. Frequency range: 2.402-2.480GHZ 4. Withstand power: 20mW 5. Battery capacity: 400mAh 6. Charging time: 2.5h 7. Standby time: 180h 8. Endurance time: 38h 9. Support active noise reduction, reject external noise interference 10. Support hands-free calling function, built-in high-sensitivity microphone 11. Game mode, zero sense of delay, audio and video synchronization 12. High-resolution sound quality, upgraded independent audio cavity, restore HIFI sound quality 13. Built-in rechargeable lithium battery, iOS system mobile phone can display the headphone power in real time 14. Ergonomic design, rotatable axis, comfortable to wear and foldable for easy storage
