Bluetooth Specifications: V2.0+EDR class 2
Frequency range 2.4GHz-2.48GHz
Transmission distance 10M
Environment Working: -20 /+60 ℃
No Working: -20 /+60 ℃
Temperature Charging: 0 /+45 ℃
Operating voltage 3.6V
Operating current ≤ 3.5Ma
Standby current ≤ 2mA
Charging time 2-3H
Talking time ≥ 3H
Standby time 100H