Logitech impresses with its newest take on wireless optical mice. Featuring (for the first time ever) Logitech’s proprietary “Hero” sensor, the tracking and direct motion transfer are nearly flawless, perhaps some of the best we’ve seen. The shell and ergonomics of the mouse are similar to the G403, and the mouse is on the large size with quite a heavy weight to boot. What makes this stand apart from other Wireless mice such as the G403 is the extended battery life of the G603. Instead of being just a great laser mouse that can complement any setup, this mouse is ideal for traveling and being in situations where you may not be able to get a solid charge for a day or more. If we’re talking straight performance, we suggest the G403 or G703 as a more reliable mouse, but for a gamer who is mobile, there is nothing quite like the G603.