(My previous mouse was also an expensive wireless mouse, MS Wireless IntelliMouse Explorer, which I was not thrilled particularly, because by the power saving "sleep" the mouse always desöfteren times, if you do not move every few seconds, and since then, I have always because I doubted again zuzulegen a wireless mouse) Even with the Logitech MX700 I was very skeptical, but I desperately needed a new mouse, because I wanted to get rid of my old =) after ample considerations I have still given a chance to wireless mice and bought the MX700. Lo and behold, my confidence I have well spent. The MX700 meets all my requirements what I expect from a mouse. Absolute freedom of movement, and no noticeable delay as you move the cursor. Good ergonomic design. How much energy the mouse also needs which could be I do not care, because I share it with at bedtime just to recharge in the charging station, could not be easier !!! So I save myself the hassle of changing and charging the batteries in an extra charger and switching on replacement batteries. At the gamblers: the mouse works wonderfully fast and registers even the smallest hand movements, I think I would at the game the difference between a good optical cable mouse and the MX700 do not remember! Except for the non-existent mouse cable, which one would always pull handle. So if you need a good mouse, the MX700 is the first choice. 1A! Especially since it also has a cool design. Get them :)