Logitech ERGO M575S wireless trackball mouse, wireless ergonomic mouse with Bluetooth and encrypted dongle, comfortable thumb control, for PC/Mac - Graphite

"Less movement, more comfort: The molded design of the wireless trackball mouse ERGO M575S keeps your hand relaxed for hours and enables smooth, precise tracking with thumb control - now with quiet clicks" "25% less muscle strain in your forearm (1): This wireless ergonomic mouse was developed with experts from Logi Ergo Lab, tested by users, and certified by ergonomists for all-day comfort" "Improved forearm posture (1): The ergonomic shape of the ERGO M575S supports your hand and aligns your forearm in a better posture throughout the day; with a good fit for most hand sizes" "Work the way you want: Experience enhanced control with 3 customizable buttons, time-saving shortcuts, and Smart Actions; adjust cursor speed to your preferences with the Logi Options+ App (2)" "Save space with thumb control: With the ERGO M575S, you can move the cursor without moving your hand, making it ideal for small or space-saving setups and use on any surface" "Easy to connect, long battery life: Connect your ergonomic wireless mouse via Bluetooth or the included Logi Bolt USB receiver and enjoy up to 18 months of battery life (AA battery included) (3)" "Made with recycled plastic: The plastic parts of the ERGO M575S Bluetooth trackball mouse are made from certified recycled plastic (Graphite: 52%, Grey White: 21%) (4)"