ERGO M575S Wireless Trackball

Logitech ERGO M575S, part number 910-007029 is a wireless graphite trackball with a blue ball. Its thumb control moves the cursor while the hand stays in place, suiting compact workspaces and use on any surface.

Connect via Bluetooth Low Energy or the included Logi Bolt USB receiver. It measures 134 mm high, 100 mm wide and 48 mm deep, and weighs 145 g. It has 5 buttons, including left and right click, back and forward, and a scroll wheel with middle click; 3 buttons are customizable. The optical sensor has a nominal resolution of 400 dpi and a maximum of 2,000 dpi. The box contains the trackball, receiver, 1 AA battery and documentation. Stated battery life is up to 18 months.