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Penguin Ambidextrous Vertical Mouse - Wireless, large Vertical design encourages a more ergonomic position to avoid wrist pain Antimicrobial BioCote protection to inhibit growth of bacteria and keeps the mouse fresher for longer Precision performance laser, easy-glide symmetrical base and scroll wheel for accurate and fast scrolling Easily transition between right and left-handed use with the bow tie switch Adjustable dpi settings: 400, 600, 800 or 1200 dpi - for quick and precise working Compatible with Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10, Windows 2000 (including it individual versions) Mac OS X (and later), Linus Wireless design for a tidy workplace