Far too expensive for such a cheap feeling mouse. Buttons are over sensitive, the on/off, DPI buttons on the bottom scrape across the ROG BATTLEQI that I purchased with it, making a terrible rattling plastic on rough plastic type of sound. The lights work, and can be setup i dividually for the scrollwheel, logo, and bottom. Obtaining tue Armoury II software drivers to actually manage the button assignmemts, etc. is THE most obtuse process I ever encountered in my 35 years of building and working with computers and pc hardware. Then you need to shut it down to rum Armoury Crate! It is well known their, ASUS, software sucks.