vertical left-handed mouse - Optical USB mouse - Vertical model - Particularly comfortable for the arm USB 2.0 - Optical sensor - Highly sensitive compared to other conventional optical mice / 1000 - 1600 dpi scanning frequency ( with dpi selector allowing you to choose freely) / Precise handling on virtually any surface 5 buttons and vertical scroll wheel- Left and right mouse buttons- Next and Previous button for optimum comfort when surfing the Internet - Easy- to-use buttons and vertical scroll wheel Take precautions to avoid possible mouse syndrome, or more precisely epicondylitis (RSI syndrome) - The ideal choice for web surfers and people who work long hours on their computer every day. Dimensions: 122*62*75mm Weight: 115g - Color: black (matte) - Operating system compatibility: Microsoft Windows 11, Windows 10, Windows 8.1, Windows 8 (32/64bit), Windows 7 (32/64bit), Windows Vista (32/64bit), Windows XP (32/64bit) / Linux