ELECOM EX-G left-handed wireless trackball mouse, model M-XT4DRBK, black, 2.4 GHz USB wireless.

Per ELECOM: thumb-operated optical trackball designed for left-handed use; 6 buttons plus tilt wheel for horizontal scrolling (customizable with ELECOM Mouse Assistant); DPI switch 750/1500; black ball on three 2.5 mm artificial ruby bearings; about 3.7 x 4.9 x 1.9 inches, 5.3 oz without battery; works with Windows 8.1/10/11 and macOS 10.10 or later.

Please check the photos for the USB receiver; units without it sell for much less.

The photo is the maker's catalog image, not the actual unit.

Open box from a liquidation lot; see photos for condition and included parts. Please match your original part number before ordering.