Bluetooth Speaker Main Function:

1) Support: Bluetooth, TF card, USB, FM Radio, Line in
2) Support phone redial
3) Bluetooth remote control 20-15M
4) It can support music formats: MP3, WMA,WAV, PE,FLAC
5) High sensitivity FM radio with internal antenna.
6) Material: ABS Plastic + Aluminum
7) Built-in Li rechargeable battery 350mAH
8) Battery can support play time: 2hours;
9) Speaker size: 62*53 MM   
10) Support Hand-free when answer calling (with MIC)
11) Auto Voice Prompt power on/off and Bluetooth is connected and   disconnected