Gakken Reproduction Edition Gakken Electronic Block Introductory Set EX-150 Price: 12,180 yen You can perform 150 kinds of electrical experiments just by arranging the blocks. Requires 4 AA batteries. Both the main unit and the box are in very clean condition with no signs of use. After purchasing as a new gift for a child, it was stored in a dark place at home. Please understand and purchase. #EducationalToy #AdultScience #ElectronicBlock #Radio #Experiment #Gakken