Logitech Trackman Marble Trackball – Wired USB Ergonomic Mouse for Computers, with 4 Programmable Buttons, Dark Gray

Left handed? Right handed? When you’re working on your computer day and night, and you want more flexibility, the Logitech® Trackman® Marble® will help increase your comfort level.

Ambidextrous trackball design
A trackball design with a long, broad palm area and gentle curves keeps your hand comfortable and supported all day-whether you use your right or left hand.

Stable base
Your hand stays comfortable all day long with this stay-put design. Plus, it saves you space.

Convenient button controls
Buttons let you easily move forward and backward when you’re surfing the Web.

Fingertip-based control
You’ll enjoy fast, accurate cursor movement with just a move of your finger.

Marble® optical technology
Our patented technology gives you smooth tracking on almost any surface so you can be productive wherever you work.*

* Does not work on clear glass or mirrors

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TRACKBALL COMFORT – Sculpted ambidexterous shape supports your right or left hand and stays in one place—move the cursor without moving your arm
CONVENIENT CONTROLS – Moving quickly between documents or browsing your favorite Web sites is a breeze with large, easy-to-reach Back/Forward buttons
ZERO SETUP REQUIRED – Flexible wired connectivity means you just plug the cable into your USB or PS/2 port – it works right out of the box.
PROGRAMMABLE CONTROLS – Configure the buttons to do exactly what you want like switching applications, opening browser windows or jump to full screen while watching videos
BUILT BY LOGITECH – This mouse comes with the quality and design we’ve built into more than a billion mice, more than any other manufacturer. System Requirements: Windows Vista Windows 7 Windows 8 Windows 10|USB port|CD-ROM drive|Mac OS X 10.4 or later