Superb mouse. Excellent build quality and very comfortable to use and with great tracking resolution. The nano receiver is very small and unobtrusive. I paired this mouse with the k340 wireless keyboard and the package is a huge improvement over my previous microsoft multimedia set-up. The logitech unifying software (which you download seperatley) works very easily to help install , another plus is u can add up to 4 logitech products onto the one nano receiver. Very happy with this purchase. It performs perfectly on a variety of surfaces, important when you are using it with a laptop.
Very positive left/right button action with two well placed additional thumb buttons, for forward/backward control – excellent for flipping between web pages.
Centre mouse wheel also pushes sideways left/right for moving around windowed screens & self centres.
Tiny wireless receiver plugs into a USB port on your PC & automatically connects the mouse every time you boot up. Works fine even at 10 foot range!. Compared to my old wireless mouse which had me changing the 2 AA batteries every week or so , battery life on this is advertised as 2 years WOW !!