Functions well located, great in the hand, unfortunately, looks cheap.

+ Mouse fits comfortably in your hand
+ Works with Logitech software well
+ Per software you can put the double (middle mouse button) on the switch behind the wheel or to another button on the mouse
+ Very smoothly, works well on my mouse pad
+ Scroll wheel has two functions, one scroll endlessly and normal

- Look is a bit cheap, material makes a cheap impression
- Rubber coating on the sides could be better
- Grease stains easily visible on the surface

If the mouse but definitely buy again because you is my great and pleasant to hold.