S21 Riding Helmet Bluetooth Intercom Headset, Specification: With USB Cable(Black)

1. Structure waterproof and nano-waterproof, effectively blocking rain, rain can also be used2. USB interface charging, support charging while using3. Intelligent power management system, low power consumption4. Functions: call, voice, music, FM5. Bluetooth: 5.06. Transmission distance: about 10m7. Sound channel: stereo sound8. Battery capacity: 1000mAh9. Charging interface: USB10. Charging time: about 2-3h11. Use time: about 21h12. Material: ABS, silicone13. Waterproof rating: IP6714. Weight: about 199gPacking list:- Earphone x 1- USB charging cable x 1- Instruction manual x 1- Paste sheet x4