1. Bluetooth 5.0, card playable, FM function, subwoofer, foldable and retractable
2. Foldable appearance, adjustable headwear size, high applicability
3. 40mm silver-plated diaphragm, acoustic structure cavity, clear hearing
4. Hands-free calling, built-in microphone for wireless calling
5. Bluetooth 5.0 chip, no inductive delay, stable transmission
6. Sealed earmuff design, effectively block external noise
7. Protein leather comfortable earmuffs, comfortable to wear
8. With A2DP/AVRCP high-quality stereo audio transmission and remote control protocol
9. Frequency response: 20-20000Hz
10. Battery capacity: 250mah
11. Power supply mode: USB charging / built-in lithium battery
12. Talk/music time: about 4-5 hours
13. Charging time: about 2 hours
14. Standby time: about 100 hours
15. Sensitivity: -42dB
16. Channel: Stereo
17. How to use: head-mounted
18. Transmission range: 10 meters
19. Charging voltage: DC 5V
20. Rated current: 1A
21. Rated power: 1W
22. Standby current: 1.6mA
23. Impedance: 32 ohms
24. Function: battery display, call function, NFC function, support music, multi-point connection