TinyMouse Small Computer Mouse. TinyMouse is about half the size of a standard computer mouse and just right for a childs small hands, and/or for people with arthritic, stiff or aching hands. The small size and a smooth-rolling scroll wheel helps all users who find it difficult to hyper-extend and stretch their hands to click the right and left buttons on a standard mouse. The colored right and left buttons help kids learn how to drop and drag, and click and move the cursor with better control. And with optical tracking, there is no longer a trackball to become dirty, lost or malfunction. USB, Windows and Mac compatible. FCC CE, RoHS & CPSIA compliant for lead and other harmful metals. Warranty: 1-year. Features: 2 buttons, scroll wheel. Case included. Dimensions: 4.75"L x 3"W x 1.5"H