Adesso Trackball iMouse T1

Adesso trackball, iMouse T1. This came out in 2010 Feb.

• 2 Buttons
• Windows and Mac compatible.
• Optical sensor. 800 DPI

Reviews on amazon are more towards negative.

Many complaint that the buttons are hard to click, you need to reach all the way to the end and press with your finger tip.

But some suggest that you should adjust your hand so the ball is under the bottom of your finger.

Alternatives

Best Trackballs, Xah's Pick