Dazzling motion takes construction creativity to a higher level. The next step for kids who have mastered the Basic Building Set. Includes enough lights to brighten any play area. Pieces easily snap together and pull apart, so kids can build anything they can imagine! Fully compatible with all other Gears! Gears! Gears! sets (sold separately), this set features 121 pieces and a storage tub. Button-cell batteries for the flashing lights included. The motor requires 3 "AA" batteries, not included. Ages 5+.