A wireless trackball that can be operated with your thumb for particularly smooth tracking. Logitech ERGO M575 Wireless Trackball Mouse The ERGO M575 wireless mouse is a thumb-operated trackball with two connection options: Bluetooth or the included USB receiver. It is designed to reduce pain and muscle fatigue in the hand and arm and provides long-lasting comfort. A wireless trackball mouse for hours of work and all-day comfort.Product features: Ergonomic shape to support the palm There is no need to move your hand to move the cursor - keep your hand and arm relaxed Precise, smooth and responsive cursor control on any surface The trackball doesn't move - ideal for tight work spaces and a crowded desk Simply connect with Bluetooth Low Energy or the included USB receiver with a range of up to 10m Product made from recycled plastic - 50% for graphite/black and 21% for off-whiteUsing FSC-certified paper for packaging that supports the sustainable management of the world's forests Up to 24 months of use from one AA battery with the included Unifying USB receiver and up to 20 months with Bluetooth Low Energy Large, easy-to-reach forward and back buttons for seamless navigation Product details: Box contents: 1 x M575 mouse, 1 x USB receiver, 1 x AA battery, 1 x user manual Connectivity: Bluetooth 5.0 (requires BT support and keyboard HID);USB receiver (requires a USB-A port ending) Software support: Logitech options on MacOS 10.11 and later and Windows 7 and later Battery type: 2 x AAA batteries Wireless range: 10m Note: Wireless range may vary depending on operating system and computer setup