+ Good size. The mouse is a small tick higher than the M305. Personally, I have very small hands and look forward to the fact that there are now a wide range of so-called Mini Mice / Notebook Mice. For my hand the work has thus become more relaxed. People with large hands should feel rather than the downside, but it's nice that the market for all offers the right mouse.
- The look seems to me rather cheap. Sometimes glossy may well look classy, but here is - in conjunction with these "rubberized racing stripes" - rather the opposite is true. It also provides constantly fingerprints on the mouse, which reinforces the impression base.
- My copy had an imbalance in the axis of the front left to back right, so the mouse always wobbled in use and gave a klackerndes noise. Processing has negatively surprised me here, because I have been accustomed Logitech else.
- Mouse clicks compared to the M305 and MX518 relatively loud and tinny. I do not like it!
- Even after all possible settings in the Logitech software that mouse offered on the monitor compared with our other two mice, the weakest performance. The mouse pointer hooked now and again, and to get from one to the other corner of the monitor, you had to travel with this mouse the broadest hand lane. (As I said, despite the settings in the operating system and Logitech software, which were of course also set for the other mice.)
Because of the imbalance I have returned this mouse, but since me the overall impression and the scanning behavior also did not appeal so I will probably resort to another model as a replacement, if necessary. On the successor to the M305, the M325 More than 3 stars I can not forgive for the tested by me M525 specimen unfortunately.