Ergonomic design wireless trackball, compatible with Windows and Mac. - Model Name: M575S - Type: Wireless Trackball - Brand: logicool (Logitech) - Compatible OS: Windows / Mac - Energy Efficiency: Energy Saving - Connection Method: USB Receiver - Features: Ergonomic Design - Condition: Box has scratches. Only tested once. * Operate the cursor by rolling the ball on the main unit while keeping the mouse position fixed. A classic Logitech trackball mouse! * Newly angled scroll wheel for a more natural and comfortable finger hold / Fits a wide range of hand sizes. * Smoother and more precise ball control / 2000 DPI tracking accuracy. * Connects via Logitech's proprietary Unifying USB or Bluetooth / Up to 10m connection range. I'm decluttering, so I will remove the listing if it doesn't sell this month. If you are interested, please consider purchasing soon. Thank you. Logitech Wireless Mouse Trackball Wireless M575S Bluetooth Unifying 5 buttons windows mac iPad Battery life up to 24 months M575 Black Domestic genuine product