Logitech ERGO M575 Wireless Mouse Easy thumb control, precision and smooth tracking, ergonomic comfort design, for Windows, PC and Mac with Bluetooth and USB capabilities . Technical specifications： Sensor technology Logitech optical Tracking Technology Rating: 400 dpi Maximum DPI: up to 2000dpi button Number of buttons: 5 battery 1 AA battery (included) Battery life Connection using USB receiver: up to 24 months Use Bluetooth connection: up to 20 months Note: Battery life may vary depending on the user and calculation conditions. Wireless technology 2.4GHz USB receiver wireless technology Bluetooth Low Energy technology Wireless operating range is about 10 meters' (33 inches) *The wireless range may vary depending on the operating environment and computer settings. 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 and adjust the cursor speed with Logitech Options software Optimal for tight workspaces: Because the trackball doesn't move, it’s excellent for tight workspaces and busy desks and fits in seamlessly alongside your computer and keyboard or laptop 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%). 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 favorite websites is a breeze with the ergonomic mouse's large, easy-reach back and forward buttons and the precision scroll wheel