Product description:

* Plug and Play, easy to install
* Wireless, With trackball, cool
* Off table and without limitation of operational space
* Scrolling function can be controlled simply by your thumb
* USB 2.0 interface, plug and play, no software required.
* Special design, can avoid the harm on your wrist and muscle, greatly reduces discomfort for Arthritis and CTS suffers
* Easy to use - left or right hand, or cradled between both
* Ideal for both laptops and desktops
* Place end of index or middle finger on trigger button & thumb on roller ball

Features:

* Suitable for Tablet PC & Laptop & Desktop computer
* USB PORT, USB receiver is included
* FOUR GROUP DPI:400,600,800,100
* Powered by one AAA battery(Not included)

Package Includes:

* 1 x Wireless Finger Handheld USB Mouse Mice Trackball Mouse
* 1 x Receiver
* 1 x User Manual