Fill the water tank to create misty steam effects and let the train chug along its tracks with a whistle, going forward or backward. The water tank uses anti-bacteria material. Rechargeable with a USB-C connector, the train runs for about 2 hours 40 minutes on a full charge, and needs less than 5 minutes to charge back up. Size: 22 x 5 x 10 cm. For ages 2 to 3.