Ergonomic grip: symmetrical left and right hand design for medium to large hand sizes; just the right curve of the back for a comfortable grip whether lying down or grasping. Frosted surface: the top cover of the mouse is frosted for a fine texture and is anti-slip and sweat resistant, quickly evaporating sweat without leaving a trace. The mouse has a frosted surface, which is non-slip and sweat resistant. 1600 DPI tracing engine, responsive, smooth operation, accurate positioning without frame loss even in fast movement. High precision tracing engine, accurate positioning without frame loss, can be used on leather, cloth, paper, wood, resin and other surfaces, allowing you to enter the work at any time and anywhere. Anti-slip grille wheel: The mouse wheel is designed with an anti-slip grille that slides smoothly for work and study.