1. Bluetooth 5.0, card playable, 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. Protein leather comfortable earmuffs, comfortable to wear
7. How to use: head-mounted
8. Channel: stereo
9. Frequency response: 20-20000Hz
10. Battery capacity: 250mah
11. Power supply mode: USB charging / built-in lithium battery
12. Transmission range: 10 meters
13. Rated power: 5W
14. Rated current: 1A
15. Charging voltage: DC 5V
16. Function: battery display, call function, NFC function, support music, multi-point connection