Logitech® Ergo M575 Wireless Trackball Mouse, Graphite

• Forget about sliding around a mouse or moving your arm to move the cursor • The ergonomic sculpted shape minimizes movement and maximizes comfort while keeping your hand and arm relaxed • Scroll wheel with large, easy-to-reach back/forward buttons • Connect with Bluetooth® or USB receiver up to 33' range • 2.4 GHz wireless technology • Medium • Uses 1 "AA" battery (included) • Up to 24 months on battery, 20 months with Bluetooth® • 2-year warranty • Graphite