Bluetooth Earphone

IC chip    BES2000U
Battery Capacity(one earphone)    65MAH
Base Battery Capacity    650MAH
Bluetooth Version    "Bluetooth V4.2
Bluetooth Protocol    HFP1.6/HSP、A2DP、A VRCP、GAIA、TWS
Frequency Range    2.4026GHz-2.480GHz
Transmission Power    Class 2
Operating range    up to 18 metres
MP3 Playing Time    one up to3 hours，pair up to  2  hours
Charging Time    ≤2 hours
Charge Voltage    3.7V
Charge Voltage    5V
Input Vlitage    4V