SANWA Wired Ergonomic Mouse, Optical Vertical Mice, for Small Hands, Reduce Wrist Strain, 1000/1600 Adjustable DPI, 6 Buttons, Compatible with MacBook, PC, Laptop, Desktop, Windows, Mac OS, White

ERGONOMIC DESIGN: Designed with a vertical orientation and a contoured shape that provides a uniquely comfortable user experience. Places your hand in a natural "handshake" wrist & arm position for smoother movement and less muscle tension. Cute Rounded shape just fits in the palm of your hand. Once you get used to it, you will love it! The advanced optical sensor technology keeps the mouse precisely on point and lets you work on most glass, wood, marble and leather surfaces.
^^ADJUSTABLE DPI: Switch between DPI levels 1000 / 1600 to adjust mouse responsiveness depending on your needs. And Blue LED tracking technology, enabling you to use the mouse on a wide range of surfaces.
^^EASIER WEB BROWSING: Advanced "Back" & "Forward" functionality buttons that located near the thumb area will provide convenience when web page browsing. *For Mac series, Forward / Backward buttons will not work.
^^WIDE COMPATIBILITY: Compatible with most system including Windows 11 / 10 / 8.1 / 8 / 7, XP, Vista &