Shinken Zemi Challenge Elementary School 1st Grade Addition and Subtraction Calculation Master Calculation Cards Tested and working. Batteries will be removed before shipping to prevent deterioration. Please check the photos for stickers and tape on the main unit. There is a menu that can be accessed by entering a code, but it has already been entered. The outer box and official guidebook are also included. The calculation cards show signs of use. They will be packaged in waterproof packaging and shipped via post. Please consider purchasing if you understand that this item has been stored at home. #Benesse #Korasho #EntrancePreparation #ShinkenZemi #EducationalToy #Challenge