Dump Quarry Truck, Dozer & Trailer 4x4 Construction Set 3 Piece Battery Operated Playset New Bright BIGTRAX One 3 Piece Construction Playset Includes: One Dumper Quarry Truck, 4 wheel drive, battery operated, approximately 4.5 in x 3.5 in x 3.5 in high. One Dozer, 4 wheel drive, battery operated, approximately 5.25 in x 3.5 in x 3 in high. One Transport Trailer approximately 6 inches long plus the ramps. Battery operated - two AA alkaline batteries required - one battery for each 4x4 vehicle (Batteries NOT included).