Students can take mechanical researching skills to the next level with the Lights & Action Building Set. The next step after the Basic Building Sets, this set is fully compatible with all other Gears! Gears! Gears! sets. Pieces snap together easily and pull apart to let students build anything they can imagine-there's no wrong way! Features 121 durable, plastic gears and includes a power motor, flashing lights, glow-in-the-dark stickers and more - all in a handy storage tub. Button-cell batteries for flashing lights are included. Motor requires 3 AA batteries, not included. For Ages 5 & Up.Recommended for 1 or more players, ages 5+.Contents include: 121 durable, plastic gears and includes a power motor, flashing lights, glow-in-the-dark stickers, Button-cell batteries for flashing lights are included