For those who appreciate the shortcuts on their mouse. Wired or wireless, flat not let the wireless mouse more than 2 days, the battery will not want, but as soon as you put the wire you can refill it while charging of it as if nothing had happened. It will not be too appreciated by those who do not like heavy mice. The rough texture of the mouse allows good support, very valuable for people sweating hands. The software is downloaded from the Logitech site, a little complicated at first, 3 configuration options, all buttons are programmable. As against the lights to the battery useless it's any good or dry battery. In short one of the best mice of the moment.