This is the "Minute Math" electronic flashcards from Learning Resources. It's an educational toy that allows children to practice arithmetic in a game-like manner with calculation problems such as addition, subtraction, multiplication, and division. [Target Age] 7-10 years old [Features] - Electronic calculation training - Multiple quiz modes available - Adjustable difficulty levels - Fun training for calculation speed and mental arithmetic skills Brand: Learning Resources Size: 22cm x 26.5cm x 7cm Material: Plastic Educational Objective: Language Skills Theme: Math Target Age: Kids Package Size: Approx. Width 22cm x Height 26.5cm x Depth 7cm Unit Size: Approx. 11cm (size of one side of the triangle) Requires: 3 AAA batteries (not included, please purchase separately) Volume control function included This is an educational toy made overseas, recommended for children who like math or for practicing calculations. My son, who likes math, used it from a young age! I highly recommend it for improving math skills during spare time by putting it in your bag when you go out!! It is sold for 5000 yen on Amazon ★ Immediate purchase is welcome. Thank you (*^^*)