iKey is the authorized United States distributor for Cursor Controls, the leader in designing and manufacturing robust pointing device solutions for medical, military and commercial screen-based applications. These trackball products are developed for use in the harshest environments where precise cursor control is essential. The P60 Series is a mechanical trackball recommended for high-resolution graphical interfaces, video imaging systems, medical equipment, marine systems, sound/light consoles and studio equipment. The ball is 2.5 inches (63 mm). Backlit options are available on this product.