Bluetooth Version: V4.1
Wireless working range: 10M (without obstacles)
Charging means: micro USB
Speaker: Φ40*19*32Ω
Speaker sensitivity: 112±3dB at 1KHz;1mW
Speaker frequency: 20-20KHz
Rated power: 8mW-12mW
Input voltage: DC 5V
Battery: Rechargeable 3.7V 300mAh Li-polymer battery
Play time: Up to 11H
Talk time: Up to 10H
Charging time: About 2H
Standby time: Up to 200H
Voice chat: supported
Voice prompt: supported