The M525 offers of he size to a very good compromise for both children's hands, as well as for my rather large hands. She is very good to use and is ergonomically and "grip" in the hand. The processing is very valuable, you have to have the same impression acquired a quality product. Top is the availability of mouse on almost any surface such as trouser legs, tablecloths, sofas ...
The quality of the display on the screen also leaves nothing to be desired, that works without delay and accurately. The mouse wheel is for me personally a little too easy, but you also get used to it without then interfere. Very good also the small receiver, which can safely leave the netbook or even, very well resolved, can stow in mouse.
I can not say how long the batteries hold. By using 2 batteries you will not have to switch long. In addition, my daughter, the mouse also turns off whenever you do not use. This should increase battery life even further. I feel that the way to be very pleasant due to the use of 2 batteries higher weight of the mouse.
Not the most important point, but the design of the mouse we find super, that's a real eye-catcher!
The price of mouse I find quite reasonable and not too expensive compared to the quality of alternative products.
We are very pleased with this mouse and hope that it also keeps long. But there ''s from me 5 stars and a buy recommendation.