Great mouse functioning properly

Have purchased my HCPC in the living room to me this mouse. It works absolutely flawlessly, even on the smooth white plate my coffee table it scans the ground perfectly and there is no stuttering or dropouts. Function in all areas top! Perfect way, are the mini small receiver and also the on / off switch, so you do not consume the batteries useless. The distance of about 2.5 m from the mouse to the receiver is absolutely no problem constraints, and therefore only 4 stars are:. The mouse itself is very small, a little unusual, and not ideal for my somewhat larger hands. In addition, it has no additional thumb button on the left side, as I am used to from my other Logitech mice. (I did, however, previously)