Feature: Support: Bluetooth,TF card,USB,FM Radio,Line in& Support phone redial& Bluetooth remote control 20-15M& It can support music formats: MP3, WMA,WAV, PE,FLAC& High sensitivity FM radio with internal antenna.& Material: ABS Plastic Aluminum& Built-in Li rechargeable battery 350mAH& Battery can support play time: 2hours;& Speaker size: 62*53 MM& Support Hand-free when answer calling (with MIC)& Auto Voice Prompt power on/off and Bluetooth is connected and disconnected& Speaker unit:4Î3W& Frequency:90Hz-20KHz& SNR:‰80db& Response sensitivity:300mv& Impendance:40HM(Î)& Package include:& 1*Bluetooth Speaker& 1*Cable