BT Version:4.2

Working Time:Up to 3 hours

Charging Time:3-4 hours

Support:BT, Calling, TF, AUX, USB

Receiver Distance:Up to 10 meters

Speaker:40mm

Power amplifier specifications:4Ω/ 3W

Battery Specification:300MAH

Frequency response range1:00Hz-20KHz

Color:Black, Red, Blue, Green,Yellow