Black Trackball Mouse with Laser Tracking Technology Made in the USA X-keys L-Trac

Laser tracking, resolution adjustable up to 1600 DPI. Black USB laser trackball. Comes with black buttons, globes and scroll wheel. Two additional input jacks on top of the trackball. Large 2.25" ball (57mm). Scroll wheel that moves smoothly. Compatible with external switches such as feather touch switches and foot switches. The X-keys L-Trac trackball is a large, high-density trackball inside a high-impact ABS molded enclosure. This enclosure is ergonomically designed to fit the contours of your hand, without forcing your arm or wrist to move from side to side. Trackballs accommodate both left-handed and right-handed people, and all sizes of hands. The easy-to-use trackball is suitable for people with disabilities and physical disabilities. The faster you roll the trackball, the faster the cursor will move across the screen. A large, high-density trackball combined with stainless steel rollers provides a "silky smooth" feel and easy control.