Specification:
Connectivity: Wireless
Connection Port: USB
Bluetooth version: V4.1+EDR
Frequency Response Range:20-20khz
Standby time: 3-4 days
Music playing time: 4 hours
Talking time: 5 hours
Charging time: 1-2 hours
Battery capacity: 70mAh
Charging input voltage: DC 5V 500mAh
Sensitivity:?100±2db
Signal Noise Ratio:?80db
Impedance: 2 x 16?
Transmission Distance: about 10m
Color: White/ Black
Length: 67cm