H3 Mobile Computer Universal Wireless Bluetooth Headset 1. Shocking bass, HiFi single sound, immersive experience, high-definition microphone 2. Dual-core power speaker, 40mm large size, strong bass 3. Lightweight and durable, foldable storage, long-lasting battery life 4. Enhanced call sound effects, CVC HD microphone 5. Bluetooth 5.0 chip, fast connection, stable transmission, stable signal 6. High-quality protein earmuffs, comfortable to block noise 7. AUX audio jack, TF card, multiple usage 8. Soft and skin-friendly, with large earmuffs that surround the ears, fit the ears without feeling, and are comfortable to wear 9. Frequency response: 20-20000Hz 10. Battery capacity: 400mah 11. Power supply mode: USB charging built-in lithium battery 12. Transmission range: 10 meters 13. How to use: head-mounted 14. Use time: about 12 hours 15. Standby time: about 300 hours 16. Rated power: 5W 17. Rated current: 1A 18. Charging voltage: DC 5V 19. Material: sponge + ABS + electroplating 20. Channel: Stereo 21. Impedance: 32 ohms 22. Sensitivity: 85dB 23. Packing list: color box + earphone + charging cable + audio cable + manual 24. Weight: about 340g