... hoursWeight:about 178 gramsBattery type:Rechargeable Poly -Li batterySupported profile:Headset and hands-free,A2DP1.2,AVRCP1.4.General Feature:Pick ... a call,reject a call,call redial,transfer a call,volume adjusrment,voice dial, HD voice (wideband speech)Show more Products ... in kind ,all rights reserved ,copy reserved headhand stereo bluetooth headset