YUMQUA Y-01 Portable Mini Finger Hand Held 4D USB Wired Trackball Mouse for Laptop Mac Window Computer Fits Left and Right Handed Users
- Off table and without limitation of operational space,4D page scrolling function can be controlled simply by your thumb.
- USB 2.0 interface, plug and play, no software required.
- Suitable for Tablet PC & Laptop & Desktop computer.
- Features 3-button design with trackball, Easy to use - left or right hand, or cradled between both.
- It can greatly ease the harm of palm joint or muscle for long time using mouse.