Package Include
2 * Portable Finger Handheld 4D USB Powered Mini Trackball (Black)

Features
- Easy to use: fit for left or right hand, or cradled between both USB mini.
- Off-table design and without limitation of operational space, and comfortable operation ergonomic trackball.
How to Use wired trackball
- Color: mainly black wired trackball.
2. the track ball for moving cursor and press the right and left button with your thumb 4D .
- 4D page scrolling function can be controlled simply by your thumb Optical Travel DPI .
- and Portable Finger Handheld 4D USB Powered Mini Trackball roller ball.
4. Use the left button to lock the screen and then you can the track ball to roll your screen freely Trackball wired.
- Material: durable hard plastic Mini wired.
- Features 3-button design with thumb-controlled trackball Mini wired .
- Mini size, light weight and easy to carry Trackball .
- USB 2 Handheld Finger USB.
3. When using "Drag and Go" function, press the button in the hole of the that has the same function as the left button of the common trackball.
- Compatible with Windows 95/ 98/ 2000/ ME/ XP/ 4D .
1. Put your index or Finger into the hole of this USB trackball.
- for and desktop users Trackball.

Goods Description
Trackball wired It supports plug and play, no software required. trackball The item is a portable finger hand-held 4D USB powered mini trackball , which is designed with off-table design and comfortable operation without limitation of operational space, and for users.Trackball 4D page scrolling function can be controlled simply by your thumb.Mini trackball Therefore, it is really a wonderful 4D USB mini trackball for choice