Fangrui Product Details 1. A8 Gaming Wireless Headset Stereo Over Ear Wired Microphone Headphone 2. Bluetooth Version: V5.1 3. Bluetooth Use Frequency Band: 2.4ghz 4. Power Level: Class Ii 5. Bluetooth Distance: 10 M 6. Frequency Response: 20-20000hz 7. Sensitivity: -42db 8. Speaker: 40mm 9. Battery Capacity: 400mah 10. Talkmusic Time: 45 Hours 11. Battery Life: 35 Hours 12. Charging Time: 2.5 Hours 13. Talk Time: 20 Hours 14. Music Time: 20 Hours 15. Power Supply Voltage: 3-4.2v 16. Charging Time: 2.5 Hours 17. High Fidelity Quality, Pluggable Microphone, Protein Leather Earmuffs, All-in-ear Noise Reduction, Cool Lights, Long Battery 18. Life 19. Sturdy Structure, Foldable Design, Easy To Carry 20. Play The Game Freely, No Delay, Clear Hearing 21. Multi-angle Foldable Adjustment 22. Colorful Atmosphere Breathing Lights On Both Sides, Fine Workmanship 23. Multiple Play Modes: Tf Card, Aux, Game Mode 24. Sturdy Headband Retractable Stainless Steel, Flexible Adjustment, Suitable For All Heads 25. Wearing Sponge Protection For A Long Time Without Getting Tired