Mouse - Universal - Yyh-imouse E3 Vertical Ergonomic Programmable Mouse Highlights Universal Yyh-imouse E3 Vertical Ergonomic Programmable Mouse Yyh-imouse E3 Vertical Ergonomic Programmable Mouse Product is shipped based on image color or size main product page. The Ergonomic Vertical Ergonomic Vertical Mouse product is shipped based on the main image color or size of the product page. This wired mouse has an upright orientation and a contoured shape that aims to better support your forearm and minimize the wrist pain that comes from twisting on a standard mouse. Additionally, using this mouse sits at your hand in a natural wrist position, which helps you get a better grip and support. On the productivity side, this mouse has six buttons, including the DPI switch that lets you change the mouse cursor DPI levels for speed. This mouse's optical sensor technology is designed to keep it precisely on point and lets you work on most surfaces without the need for a mouse pad. Commands to reprogram buttons. Plus, get even more customization with the E3's adjustable weight tuning system.