*Built-in Li-ion rechargeable battery

*High-class Rubberized finish+ Fabric grill

*With SD port to play music from SD card

*With Volume-/+ and  Pre-/Next +

*Hands-free function build in

*Bluetooth Version:V5.0

*Aux in for connect with other MP3,PC…

*Driver Size: 2"*1

*Power Supply: DC3.7V/ 500MAH

*Power Output: 3W

*Play Hour: 6 Hours by 70% volume