1.Bluetooth V1.2 Complaint, CSR Chip 2.10 Meters Working range ; 50*25*18 3.Output level, 1mW (0dBM), Class II weigt:20g 4.Rechargeable Lithium Poymer Battery; colour :(black /gray /prik /red) 5.Power Source : Standard AC/DC adaptor, Input : AC ~ 240v. Output : + 5v ~ 0.3a 6.Voice Command : Fr dialing out (Subject to mobile phone support) 7.Last number redial : For dialing out (Subject to mobile phone support) 8.Talk time : 8 hours talking time, 200 hours standby time