Cool Technology professional USB laptop Blue light Computer PC mouse with 6 buttons Gaming mouse design Size 4.84 X 2.76 X 1.52 inch(L x W x H ) , 135g. DPI 800-1600-2000, 3 speed, easy adjustment. Perfect for games. Such as CS,CF,Warcraft, Starcraft WOW, LOL Suitable for design, daily use, office work, Ergonomic 2 side key for Front and Back