"Bluetooth version: V4.2
Battery Capacity: 50mAh
Transmission distance: 10m
Frequency response: 100Hz-10KHz
Micro sensitivity: -44dB±3
Resistance:14Ω±20%
Rated Power: 4mW
Play time: about 2.5h; Standby time:about 62h
CTN G.W.: 13.74 kg; CTN SIZE:60*50*35cm"