Parallel imported Logitech mouse MX Ergo S wireless trackball mouse â The MX Ergo S is Logitech's advanced wireless ergonomic trackball with a 20° tilt and 6 customizable buttons, offering an 80% reduction in click noise, and supports fast USB-C charging (cable sold separately). ⥠The MX Ergo S is designed specifically for medium and large hand sizes. The 20° tilt helps maintain a better arm posture and reduces muscle strain by approximately 27%. âą With six customizable buttons and a DPI button that easily switches cursor speed, operations become faster and more efficient. Assign convenient shortcut keys or customize Smart Actions according to your needs using the Logi Options+ application to adjust DPI. ⣠Connect via Bluetooth or the included Logi Bolt receiver