The Revolution Strobe is an anti-gravity spinning device that appears to be floating in air. The strobe design flashes bright red LEDs to create intriguing light patterns around the spinning, levitating spindle. Give the spindle a good smooth spin and it can rotate for several minutes. The Revolution is a kinetic motion toy that is great fun for any desk or office. Base - 5" wide x 2.5" high x 3" diameter, black, hard plastic with glass plate. Spindle - black and white with LEDs. Instructions included with packaging, batteries included (only required for LEDs, not required for spinning). This product contains strong magnets. Keep magnets away from computers and anything else which might be sensitive to magnetic fields. WARNING: Choking Hazard - Small parts. Not for children under 3 years.