About this item:

Ergonomic comfort design, relaxed hand and arm: The comfortable, sculpted ergonomic shape of this mouse naturally fits your hand
    

Smooth thumb control: Track precisely with great cursor control on any surface and easy thumb-operated trackball. 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 and fits in seamlessly alongside your computer and keyboard
    

Two 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 10m (33 ft) range
    

Plastic parts in ERGO M575 include post consumer recycled plastic (Graphite/Black: 50%, Off-White: 21%). Uses FSC-certified paper for responsible packaging. Certified carbon neutral.
    

Up to 24 months of use from a single AA battery with the USB receiver. You may even forget your Logitech wireless trackball uses batteries at all
    

Convenient controls: Moving between documents or browsing your favourite websites is a breeze with the large, easy-reach back and forward buttons and the precision scroll wheel