Features:Bluetooth，Calling, TF, AUX, USB

BT Version:V4.2+EDR

Working Time:1-2hours

Charging Time:1 hours

Receiver Distance: 10 meters

Speaker:40mm

Power amplifier specifications:4Ω/ 3W

Battery :300MAH

Product Size:116*80*45mm

Frequency response range:100Hz-20KHz

Color:Black, Red, Blue, Green