... ,microphone Hands free bluetooth mini speaker for MP3 Product Model : BTS-01 Product name : Handsfree bluetooth speaker (CE,ROHS certification ) Specification a, Accord with bluetooth V2 ... .1 +EDR(A2DP) Bluetooth specification b, Transmission range:<10Mc, USB charging voltage :DC 5Vd, Output power : 3We, Built-in Power ...