No key design Gestures control with cool backlight indicator

Specification
● Item No.: BS2
● Material: Tempered Glass + Aluminium 
● Bluetooth Module No.：CSX8645
● Product Size（L/W/H）：216mm x 72mm x 72mm
● Bluetooth：Version 4.0
● Degree of Distortion：≤1%                                   ● Frequency Response：135Hz—20KHz
● Output Power：5w x 2
● Audio Format：Apt—X，SBC,MP3 and AAC
● Battery Capacity：3.7V 4000mAh Rechargeable Battery
● Charger Tip Size/Voltage：Micro USB/5V
● Wireless Range：UP to 10m                                   ● Device Compatibility：Mac OSX,IOS,Android and Windows