Logitech M575S / Trackball / 910-007029

Quick overview from the supplier:

Wireless Trackball Mouse Logitech M575S, 400-2000 dpi, 5 buttons, Ergonomic, 1xAA, Silent, Bolt, 2.4Ghz+BT, 1xAA, Graphite . PN: 910-007029 Dimensions Height  134 mm Width  100 mm Depth  48 mm Weight  145 g Technical Specifications Sensor Technology Sensor Technology Logitech Advanced Optical Tracking Nominal value 400 DPI Max value Up to 2000 DPI Buttons Number of Buttons 5 (Left/Right-click, Back/Forward, Scroll-wheel with middle click) Number of customizable buttons 3 (Back/Forward, Middle click) Customization app Battery Battery type 1 x AA battery (included) Battery life Up to 18 months  Connection Type USB Receiver Bluetooth Low Energy Technology Wireless range 10 m wireless range