perixx PERIMICE 520 Wired USB Ergonomic Trackball Mouse, Adjustable Angle, 8 Button Design, Black

ADJUSTABLE ANGLE: A unique detachable stand to customize the angle of the mouse from 0 to 10 or 20 degrees to minimize strains on wrist and arms SCULPTED DESIGN: Supports your hand comfortably and let it rest on the mouse; Product Dimensions: 5.47 x 4.02 x 196.85 inches, Product Weight: 0.3 lb PROGRAMMABLE BUTTONS: 8-Button mouse with 6 programmable buttons; Download driver on Perixx website TILTED-SCROLL-WHEEL: Middle click function; scroll horizontally as well as vertically, using a tilting scroll-wheel; Adjustable DPI 400/1600 SYSTEM REQUIREMENTS: Window 7, 8, 10 and above; Package includes: PERIMICE-520, 10-degree stand, 20-degree stand, manual