The DIY Mr Chimney construction kit from Construct & Create is a clever 2-in-1 STEM set that allows you to assemble either a train or a robot. By adding a little water, the built-in ultrasonic technology creates a completely safe, cool mist (steam) that comes out of the model's chimney.

• 3 different spray functions for a realistic and interactive mechanical experience.
• Operates with 4 AAA batteries (not included).