PCArena has reviewed a Wireless Optical 3DMouse from A4 Tech :
A4 Tech seems to have been a little sneaky in their choice of design here. The design resembles the higher models of IntelliMouse Explorer/Optical. The Wireless Optical 3DMouse fits nicely in the hand and glides smoothly across my mouse pad which is an Everglide Giganta Mouse Pad. The mouse fits both left and right handed users. It will also track on most surfaces like the Microsoft and Logitech optical mice. The cordless feature is a big plus for gamers, no more tangled cords to trip you up during that crucial match of your favourite game.
I would say that this mouse is really great and this good for users who want a Wireless Optical mouse but don't want to pay a lot of money for it. I would give this mouse a 8 out of 10