Features:
Support Bluetooth/Line in Audio connectionFM radioTF cardHards-free calling
Support L2CAP/A2DP(AVCTP/AVDTP/AVRCP)HSP/HFP
Voice guidance
Built-in mic ・Built-in Rechargeable and Detachable li-ion Battery

4 Keys operation:
1).Mode key(switch to bluetooth/USB/TF card/FM radio/Line in Audio)
2).Last song/turn down volume when press long
3).Next song/turn up volume when press long
4).Make a call in phonethe pause/play press twice to switch the call to speaker.
Press once to answer a call. Press long to cancel pairing under Bluetooth mode.
Press short to search station under FM radio mode.

Specifications:
There are four colors available for you to choose.
Color: Blue Red Yellow Black
Voltage: DC 5V
Dimension: 108 * 36 * 54 mm
Bluetooth Version: 2.1 + EDR
Working Distance: up to 10m
Loudspeaker: 4 3W
S/N Ratio: !#!gt!*!= 95db
Frequency: 280Hz - 16KHz
Built-in Battery
Li-ion Battery: BL-5C
Voltage: 3.7V
Current: 1020mAh
Power: 3.8Wh
Battery Carge Time: 2hrs

Package listing:
1 * Mini Wireless Bluetooth Speaker
1 * 2 in 1 micro USB and 3.5mm audio cable