I wanted a bluetooth phone carkit that I could also use to charge my phone in a cradle(pointless I hear you cry) but NAY, in a World of choice this is what I have got.
If I want to use bluetooth then I slip my 6320 into Bluetooth mode and keep it in my pocket, then when I turn the ignition on the carkit kicks in and it works fully when the phone is in my pocket out of the way.

BUT, if I want my phone to be charged then I slip it in the cradle (sold seperately) and it charges it and is in full working order.

It is a top piece of kit that took me 15 minutes to install (don't pay anyone to install it for you, its easy) as you link up about 3 wires and make sure all the cables run where you want them too (I got the box attached to the lower part of the steering column) and away you go.
The speaker it comes with is great aswell, even with the motorway noise you can still hear what is being said to you, and with the stereo MUTE wire, you won't need to worry about turning the streo down every time you get a call.

All this for about £15 more than a Bluetooth headset. If you shop around you can get the kit and the cradle for about £80, which is a cracking deal and it is a functional piece of kit, that I have had NO trouble with in the 2 months of use ..... AND I can upgrade when I change my phone as I just buy a new cradle for about £10.

JOBS A GOODUN !!!