Who knew the fridge could be so fun? These Gearation Refrigerator Magnets by Tomy Toys include six brightly colored, battery-powered moving magnets! Young children will be fascinated as they watch and control how the interlocking gears flop, twirl and turn. The large central, battery-powered gear drives the rest of the Gearation Refrigerator Magnets. Just attach any of the other five gears, and let the mesmerizing mechanics begin. A wonderful developmental and creative toy for young children! Each set of six Gearation Refrigerator Magnets features an on/off switch, as well as a forward and reverse switch to change the motion of the gears at any time. Tomy Gearation Magnets stick to any magnetic surface - not just the fridge - so they're equally fun used on the side of metal filing cabinets and more. The Gearation Refrigerator Magnets require one "AA" battery, not included. For ages 3 and above.