4D Off-table design for free and comfortable operation. Ideal for laptop users. Thumb-controlled trackball. Ideal for presentation.
Off table and without limitation of operational space
4D page scrolling function can be controlled simply by your thumb
Can avoid the harm on your wrist and muscle
Fit left and right handed users
Plug and play no software required
Unit Dimensions: 5.75×2.5×4.25 inches