[Ergonomic Vertical Design]: Unique vertical ergonomic computer mouse with special volute bionic design reduces arm discomfort and hand stiffness [RGB Lighting & Software Setting]: With RGB Chasing lighting, offer you a marvelous working experience (Note: if want to turn On/Off the lights, please find the switch at the bottom of the mouse). With the Memory Setting Driver, all keys are programmable, setting the lighting effects mode and creating any macro, just set and all the settings would be stored