Odyssey Battery-Operated Dual-Motor Marble Run &ndash; Advanced, Fun Design Transports Marbles on Elevator! &ndash; Contains 520 Pieces +60 Marbles; for Builders Age 12+ Construction-Style Toy Helps Stimulate Creativity & Reasoning from Early Age Advanced Run Boasts Battery-Operated Elevator that Transports Marbles! Expansive Set Features 550 Pieces Including Building Parts, Marbles & Motors Taller Multi-Story Tower Tops Out at Maximum Height of 43 Inches (2.5+ Feet) Illustrated Instruction Manual Included; 4 AA Batteries Required (Not Included)