2.4 G Laser Wireless RF Hand Track mouse Key Facts 2.4 G Laser Wireless RF Hand Track with Combo Interface White body with Black BAll Details Patented, brand new input device 4D hand track with USB interface Single ball, high speed optical 4D scroll inside Off-table operation; without space limitation 4D page scrolling function can be controlled simply by your thumb The harm of radiation and body fatigue owing to using a traditional mouse can be reduced Compatible with Windows 98/2000/ME/XP/NT Applications: presentation, training, seminar, projector, PC operation Uses two AAA rechargeable NiMH batteries for long-time operation Recharge model: the user can operates the RF hand track in normal condition while the batteries are in charging mode Radio frequency transmission (2.4GHz); no need of aligning the receptor The built-in laser pointer helps user to draw the audience attention Operating distance: 10 meters Colored box package