Lionel Mattel Thomas & Friends Battery O Gauge Toy Train Set with Remote and Water-Vapor Smoke will inspire your young engineer to chug away with Thomas to embark on new and exciting railroad adventures. Lionel Battery O Gauge Train Sets include a battery-powered locomotive controlled by remote, an exclusive new Battery O Gauge 2-Rail Track System, and features Water-Vapor Smoke Effects. Locomotive and Rolling stock are capable of running on Lionel O Gauge 3-Rail FasTrack, however do not require track power. Lionel O Gauge FasTrack is sold separately (not included). Set includes (1) Battery-powered Thomas Locomotive, (2) Passenger Cars, (1) Remote Control, (3) Interchangeable Faces, (10) Straight Battery O Gauge Track Pieces, (16) Curved Battery O Gauge Track Pieces, (2) Right Interchange Battery O Gauge Track Pieces, (2) Left Interchange Battery O Gauge Track Pieces, (1) Figure 8 Crossover Battery O Gauge Track Piece, (4) Road Signs, (2) Trees, and (1) Water Bottle Dropper. Compatible with Lionel Battery O Gauge and features a battery-powered locomotive, working headlight, water-vapor smoke, happy, smiling & knowing faces, fixed knuckle couplers, authentic train sounds including Thomas & Friends announcements, bell, and whistle. Requires adult assembly and (4) AA & (3) AAA batteries for operation (not included). Wipe with a soft cloth to clean and remove all batteries when not in use for an extended period of time. Lionel Battery O Gauge products are NOT compatible with Lionel Ready-to-Play products. Recommended for ages 4 years and up.