Vertical Ergonomic Design, Left-Handed. Adjustable Up To 30 Grams Of Weight. Dpi 800/1200/1600 (Or 400-4800 With Driver). Programmable Driver (Included) Lets You Adjust Colors, Blink Speed, Change Dpi And Assign Commands (Macros) With A Few Simple Steps. (Left Handed Ergo Gaming Mouse)