IC chip: Realtek 8763B

Battery: 50MAH

Charging base:  480MAH

Bluetooth  V5.0

Frequency Range: 2.4GHZ

Operating range: up to 10m

MP3 Playing Time: up to 4 hours

Standby Time: 100 hours

Charging Time: 2hours

Charge Voltage: 3.7V

Waterproof: IPX 4

Acces: Micro USB charging cable,User manual                                                                     

Package box size: 100*100*50mm