Description：
1.Plug and Play, easy to install
2.Wireless, With trackball, cool
3.Press then appar laser pointer for presentation
4.Off table and without limitation of operational space
5.Scrolling function can be controlled simply by your thumb
6.USB 2.0 interface, plug and play, no software required.
5.Special design, can avoid the harm on your wrist and muscle, greatly reduces discomfort for Arthritis and CTS suffers
6.Easy to use – left or right hand, or cradled between both
7.Ideal for both laptops and desktops
8.Place end of index or middle finger on trigger button & thumb on roller ball

Features:
1.Suitable for Tablet PC & Laptop & Desktop computer
2.USB PORT, USB receiver is included
3.FOUR GROUP DPI:400,600,800,100                       
4.Battery require： 1 x AAA

Package:
1 x Wireless Finger Handheld USB Trackball Mouse with laser pointer
1 x USB receiver
1 x bag