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
- Blue Color
- Unit Dimensions: 5.75×2.5×4.25 inches