PERIMICE-520 Wired Ergonomic Vertical Trackball Mouse

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 and to ease your wrist pain; Product Dimensions: 13.9 x 10.3 x 5 cm, Product Weight: 0.26kg Durable & Sculpted Design - Supports your hand comfortably and let it rest on the mouse; Durable, high-performance Omron switches for the left and right buttons, up to 10 million clicks Programmable Buttons - 6-button mouse with programmable feature; 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