Experience MX Ergo S advanced wireless trackball, user-tested and certified by ergonomists, with a 20-degree tilt angle for 27% less muscle strain in your forearm(1) and more comfort throughout your day. With no need to move the hand around to move the cursor, thumb control lets you work at peak performance and comfort while saving space on your desk. Equipped with quiet clicks, 6 customizable buttons with the Logi Options+ App, dual connectivity with the included Logi Bolt receiver, and fast USB-C charging to get 24h of use with a 1-min charge (cable not included).