New Frontier Express 15 Piece Battery Operated Toy Train Set w/ 5 Train Cars, 6 Curved, 4 Straight Tracks by Velocity Toys New Frontier Express 15 Piece Battery Operated Toy Train Set 5 Train Cars, 6 Curved, 4 Straight Tracks Tracks are Easily Attachable, Fun Music and Realistic Train Sounds! Easy Hinge Action to Attach Cars, Stimulate your Child's Imagination Requires 2 AA Batteries to run (not included)