Take your construction creativity to the next level with lights and motion. Complete with power motor, flashing lights, and glow-in-the-dark stickers, this is the perfect next step for kids who have mastered the basic building sets. Flashing lights require button-cell batteries, included; motor requires 3 AA batteries, not included Parts are all interchangeable for endless combinations and designs. # Pieces In Set: 100 Number of Batteries: 3 Learning Skill: Engineering Power Source: Battery (not Included) Recommended Ages: 5 Years And Up Measurements: 11.7 Length/Inches, 11.7 Width/Inches, 10.8 Height/Inches Assembly: Assembled Base Material: 100% Plastic Country of Origin: Imported p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 15.0px Calibri; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} WARNING: CHOKING HAZARD – small parts. Not for children under 3 years.