Cooler than this mouse only Chuck Norris. Pros below: It's been over 6 years, I don't remember exactly. Bought for 650. Surprised to see it is still for sale. The buttons still click as they should, no complaints. The cord is like new. The matte coating did not peel off, except for a tiny dot on the left button. The buttons on the side are very convenient in the browser and in games. The double-click button is convenient to climb through folders and select by word. Convenient forms, no need to squeeze the mouse to pick up and drag it. I don’t really use speed switching, only when switching OS or connecting to another computer. Works on any surface. You don't even need a rug. I used A4 sheets for 3 years) The only thing where it didn’t work was on a transparent glass table :) Cons below: After 5 years (when I began to actively click on the wheel in the game), the scroll began to be fake. Cleaning and crimping helps for about 3 months. Before the button "forward" you have to reach a little with your thumb.