1. Bluetooth version: BT V5.4 2. Frequency: 2.402-2.480Ghz 3. Working distance: 10m 4. Output power: 8mW 5. Rated power: 5mW 6. Distortion: about 5% 7. Charging voltage: DC5V 8. Battery capacity: 200mAh 9. Headphone charging time: about 2h 10. IPX8 nano waterproof design, sweating during exercise 11. Customized bone conduction vibrator, clear human voice 12. Rounded corner streamlined body, gentle and comfortable to wear 13. Comes with 32G memory card, you can listen to music without a mobile phone 14. High-strength titanium alloy, no deformation after twisting and stretching
