IF you don't like wearing bluetooth headsets and you don't want a 'built in' or fixed handsfrre device then this is a great option. Easy to swap from car to car. Pairs upto five phones and auto remembers the last one paired with. Good speaker and microphone and no reports of problems hearing me from people I call.
Great battery life and a useful mini usb connector for charging. Comes supplied with a mains charger, but 12v usb chargers a cheap and to be honest with average daily use, battery lasts 7-10 days