The mouse is generally a bit strange in his hand. Dei mouse is very bad in his hand. Although I have small hands, but the mouse was probably designed for even smaller hands. Generally, the mouse feels not just high quality and is also quite easy. The pressure point of the keys is alright. In Linux, this mouse does not work unfortunately. The color of the LED will change constantly, you can not set a fixed color. To disable the lights permanently, but is possible. The biggest drawback and the reason for the one star is the accuracy of the mouse. Especially in slow motion, you realize that the mouse jerky strong and the pointer jumps back and forth all the time.