Sanwa Supply Wired Ergo Trackball MA-TB177BK

This wired trackball features an ergonomic shape that puts less strain on your wrist. The new design allows you to use it by gently supporting your hand from the side rather than resting it on top, reducing wrist twisting. It can be held at a natural angle, so it doesn't put strain on your wrist even when used for long periods of time. This trackball allows you to control the cursor by rolling the ball with your finger. It features a medium-sized 34mm ball that is just right for moving with your thumb.