4D Hand Held Trackball Mouse Only $15


ShareASale is offering the 4D Track Mouse for only $15 thru 5/17/12.   The 4D Track Mouse is a brand-new input device. It can be used off-table hence it has no limitations in terms of operation space.

Features:
* Elegant design
* Off-table for free and comfortable operation
* Can be operated in various ways to avoid injury to palm, joints and muscles
* User does not have to sit close to the monitor by using this track mouse
* Avoids eye fatigue and harm from radiation
* Controls cross coordinates sensitively with the thumb

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