About the product
- 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
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