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1, Hand-held Trackball Optical Mouse; Mouse; Optical Mouse:
With an elongated body and smooth optical trackball technology, this mouse provides maximum comfort. This Off-table design consolidates fashion and technology and a new way to control mouse. No limitation of space . Fingertip-based controls allow for quick and accurate movements
2, Main Features:
Off-table, for free and comfortable operation;
Can be operated in various ways, avoiding harm to palm joint or muscle.
High accuracy and sensation;
Can bu used on the surface as same as optical mouse.
User doesn't have to sit close to the monitor by using this track mouse;
Avoiding eye fatigue and radiation harm.
Can control the cross coordinates sensitively, simply with the thumb.
Compatible with windows 2000/XP/Vista/Mac OS X.
Resolution: table 1200dpi, trackball 1600dpi;