Logitech wireless notebook mouse. Windows, Windows Vista and Mac compatible.
Small & light weight. Uses 1 AA battery (included). Comes with 3 years manufacturer's guarantee.
I bought this recently at Comet. Ordered on their website and collected it at their store.
Very impressed with its response and the USB connector is tiny so can stay in the laptop. There is also a slot in the mouse to store the USB which is very handy as it would be difficult to find if you misplaced it due to its size.
Very good value for money.