I purchased this item from Terrabok on the amazon marketplace as I realised that they do not charge for postage and packaging.
The mains charger itself is only very small (no wires,only the plug) and requires a USB cable to plug into the TomTom. Thats all there is really to it. There is also a small LED diode on the charger to tell you that the satnav is charging.
Overall I am very satisfied with my purchase as charging the satnav via the computer take a very long time. I only wish TomTom would supply buyers of its products with a mains charger.
Well done Terrabok!