This bluetooth headset is compatible with V2.0, ClassII. Built in powerful battery, the talk or music playback time is up to 4 hours, and standby time is 100 hours. A bluetooth headset allows your hands to be free while talking on the phone. So it is a nice safeguad if there is a call when we are driving. Buy this bluetooth headset to your father and show that you care about his safety on this coming Father's Day.