The Adesso iMouse T1 Trackball with Scroll offers a contoured ergonomic design that alleviates palm and hand strain while encouraging minimal hand movement or space.  Scrolling ability is rare on trackballs and is a great feature that further reduces hand stress.  Acurracy and precision are also key features in this mouse.

Adesso iMouse T1 Trackball and Scroll Mouse Features:

• Superior accuracy and smooth motion - 800 DPI resolution ensures minamal hand movement and superior movement
•  Detachable ball for easy cleaning - removable 1.8" tracking ball for easy cleaning
• Reduced hand discomfort- ergonomically designed to reduce hand strain
• Operating Systems - Windows® 7, Windows® Vista, Windows® XP, Windows® 2000, Mac® OS X & Mac® OS 9
• Limited Lifetime Warranty. Adesso Warranty Information

Adesso iMouse T1 USB Optical Trackball and Scroll Mouse Specifications: