Whether you're left or right handed, when you're working on your computer day and night, you want more flexibility and comfort. That's what you'll get with the Trackman® Marble® mouse. The stays-put trackball design keeps your hand comfortable and supported all day. The button controls let you move forward and backward with ease, and you’ll enjoy fast, accurate cursor movement with just a move of your finger. Plus, the patented Marble® optical technology gives you smooth tracking on almost any surface. Connector/Port/Interface: PS/2; USB; Left/Right Hand Use: Left/Right; Mouse Technology: Optical; Wired/Wireless: Wired.
With the M570 wireless trackball, you work in comfort with a stable, sculpted trackball that gives your hand all-day support and total cursor control. Simply plug in the tiny, leave-in Logitech® Unifying™ receiver for long-range, advanced 2.4 GHz wireless connectivity of your mouse. You'll get up to 18 months battery life, an integrated scroll wheel, plus programmable and back-and-forth buttons to help you do what you want to do faster. Connector/Port/Interface: USB; Left/Right Hand Use: Right; Mouse Technology: Laser; Wired/Wireless: Wireless.