Bluetooth version：JIELI Bluetooth V4.2+EDR
Transmission range：10m Play time：4H
Standby time：120H
Battery：85mAh(rechargeable lithium battery)
Function：Adjust volume, switch songs, answer calls, reject calls, hang up the phone, bluetooth playing, hands-free calls, phones replay, bluetooth phone back to calls, voice prompt, power display, intelligent power off, self-timer function, with TF card slot.