Enter the sub-surface world of the Tube, construct and take to the rails you very own entry level London Underground Train Set. Become a track engineer, station builder and train driver all in one fantastic set. Full of fun accessories, including a pop up cardboard station and tunnels. Over 40 pieces and runs on x2 AA batteries (not included). Includes 3 car train, track, pop-up cardboard tunnels, Underground station. with 4 real-life announcements, plus instruction manual. Warning - small parts: Not for children under 36 months. Note: Ensure you run your finger over the track connections so that it is smooth, otherewise the train will derail (Like real life). For the connectors between the carriages, it requires some force to connect them. Do not be scared of breaking it- they are very tough In addition, the opening of the better compartment needs some force pulling it up while unscrewing. a fingernail lifting it while unscrewing will work