IQ KEY is an educational toy developed in Korea. By assembling blocks with built-in motors and gears, you can build over 100 variations of toys. It has a depth that even adults can enjoy. I purchased it in 2017 for 15,000 yen. Unfortunately, my child didn't use it much, and the contents are in very good condition. The box is faded. The instruction manual has some repaired areas. Other than that, there are no broken parts and it can be used without any problems. I have confirmed that there are no missing parts.