• Remote controlled toy train set - Fans of STEM toys and pretend play will love this LEGO City Explorers' Arctic Polar Express Train set for kids aged 7 and up • What's in the box? - An RC toy locomotive, passenger car, flatcar, outpost, mountaintunnel, mine cave, 22 track pieces, a Johnny Thunder minifigure, 5 explorer minifigures and 2 Arctic fox figures • Features and functions - Kids can drive the toy train through the mountain tunnel to activate a rockfall function and send minifigures dow n a zip line that connects the mountain to the Arctic outpost • Powered Up playset - Kids operate the model train locomotive with the remote control or a smart device equipped with the LEGO Powered Up app. Set requires 10 x LR03 (AAA) batteries, not included • A premium-quality LEGO gift - Give this feature-packed building toy as a gift for boys, girls and train fans aged 7 and up • A city without limits - Kids can unleash more fun and adventures when they add this toy train building set to other playsets (sold separately) from the LEGO City range • Reative toys with a fun digital guide - The LEGO Builder app takes kids on an intuitive building adventure with tools that let them zoom in and rotate models in 3D as they build • Dimensions - The motorized train including the 2 cars in this 1,517-piece LEGO City set measures over 3 in. (8 cm) high, 27.5 in. (70 cm) long and 2.5 in. (6 cm) wide