Logitech 910-005869 ERGO M575 Wireless Trackball (Black) Meet ERGO M575, a wireless trackball with easy thumb control and sculpted ergonomic shape for all-day comfort. With no need to move your arm around to move the cursor, your hand and arm stay relaxed. Ergonomic comfort design, relaxed hand and arm: The comfortable, sculpted ergonomic shape naturally fits your hand. Smooth thumb control, precise tracking: Great cursor control on any surface. Adjust the cursor speed with Logitech Options software. Perfect for tight workspaces: Because the trackball doesn?t move, it's perfect for tight workspaces and busy desks. 2 ways to connect and multi-OS: Connect simply with Bluetooth or the USB receiver and never worry about drop-offs or lag up to a 33 ft (10m) range. Plastic parts in ERGO M575 include post consumer recycled plastic (Graphite/Black: 50%, Off-White: 21%). Uses FSC-certified paper for responsible packaging. Up to 24-month of use from a single AA battery with the USB receiver, you might just forget your trackball uses batteries at all. Convenient controls: Moving between documents or browsing your favorite websites is a breeze with large, easyto-reach Back/Forward buttons and the precision scroll wheel. Package Contents: ERGO M575 Wireless Trackball, USB Receiver, 1 X AA battery and QSG. Technical Specifications Connection support: 2.4GHz USB receiver Bluetooth Low Energy, Software support: Logitech Options on macOS 10.11 and above and Windows 7 and above. Battery type: 1xAA Battery, Wireless range:10-m (33-ft) wireless range (1).