Waterproof IPX8 Diving Swimming Surfing Wireless MP3 Player 16GB Bone Conduction Bluetooth Headset Music Player

Specifications:
1. 100% Brand New, real bone conduction
2. Built-in 16GB memory
3. Bluetooth 5.0, working distance <=10 meters
4. Answer/reject calling
5. Frequency Range: 20-20KHz
6. Temperature Rating: 0 - 50degrees Celsius
7. Waterproof Rating: IPX8, can work underwater Max. 3 meter
8. Charging time: 2 hours
9. Playing/calling time: 6--8 hours
10. Support music format:MP3/WMA/WAV/APE/FLAC
11. Systems: Windows/Mac OS, Window 7, Window10
12. Power:Built-in 3.7V/300mAh lithium polymer rechargeable battery

Blue,red,black, grey optional.

Packet content:
1 X MP3 Player
1 X USB Cable
1 x User manual