New USB 3D Optical Scroll Wheel Mouse Mice For PC Laptop Desktop Notebook Gray ZJ. High quality optical technology. Ergonomic designed, suitable for left or right hand. Optical scanning on almost all surfaces, perform well on the most surfaces or without mouse pad. The roll wheel can be easily guided pleasantly and used as the third usable key. Optical scanning on almost all surfaces, No mouse pad needed, functioned on the most surfaces.