1) Intelligent voice system 2) Hand free function 3) Re-dial last phone function 4) 3.0+EDR Bluetooth Detailed Product Description Intelligent ... ,OBEX,SPP,A2DP, AVRCP,FTP ,HS/HF,DUN ProfilesRMS Power3W*2, quality speaker, passive board with supper bassInput Power DC 5v ... board *111)Power supply:USB port or DC 5v mini wireless Bluetooth speaker with FCC,CE,ROHS certificate