IC chip: BES2000U

Battery: 60MAH

Charging base: 400MAH

Bluetooth V4.2

Frequency Range: 2.4GHZ

Operating range: up to 15 m

MP3 Playing Time: up to 3-4 hours

Standby Time : 240 hours

Charging Time : 2 hours

Charge Voltage: 3.7V

Earphone weight/pair: 10g

ACCES: Micro USB charging cable                             

Package box size: 92*92*30mm