I chose this mouse at the base because it has more than 7 programmable buttons and also thanks to its futuristic design (Personally it reminds me of transformers ^^) You will not be disappointed, German mark, superb finish, ability to change cursor speed with a button that changes the color of your mouse (red, green, blue or pink). For a few months I have and I have observed, to date, no bugs or problems. short, a product attractive, practical, elegant and very competitive with a price :)