The optical Mini Mouse-Tiny Mouse is a computer mouse designed to fit in the palm of a child's hand. It is about half the size of a standard computer mouse. It is designed to give children greater comfort and control. The right and left “click” buttons are different colors allowing the instructor to say “click blue” or “click red”, when right/left concept is not fully understood. Body of mouse is black to match the Lesson Board Keyboard. COLOR: Blue, Yellow and Black. WARRANTY/GUARANTEE: As stated by the manufacturer.