Product description1.[Ergonomic Vertical Design]: Unique vertical ergonomic computer mouse with special volute bionic design reduce arm discomfort and hand stiffness.2.[RGB Lighting u0026 Software Setting]: With RGB Chasing lighting, offer you the marvelous working experience (Note: if want to turn On/Off the lights, please find the switch in the bottom of the mouse). With the Memory Setting Driver, all keys programmable, setting the lighting effects mode and creating any macro, just setting and all the setting would be stored.5 Adjustable DPI: 800-1200-1600-2400-4000 5 gear DPI, which would be easily shift according to your daily working requirement by the dotted switch in the bottom, with 4000 DPI, even could use it as the ergonomic gaming mouse.3.[Single Blue Lighting u0026 Software Setting]: Blue LED light (Blue solid color), coloring your E-life ( lighting ON/OFF switch is on the bottom). For the Driver, all the keys could be set into different function, even create the