The mouse is designed for some alien type of hand. I can use it in some simple applications, but definitely not for gaming or any fast-clicking like in photo editing. If I use it for browsing, my hand starts to hurt after 15 minutes (and I have fairly large hands, would be even worse for average sized hands). Would return it but threw away the simple paper box it came in.
The mouse is silent, which is pretty cool feature, and the led color looks nice, but as the main function is not working, I can not recommend this product to anyone, but a person with extremely large hands and long strong fingers.