[For beginners to advanced users] A 4-bead, 7-digit one-touch abacus. This one-touch abacus is compact and convenient for carrying around. It can calculate up to about 14 digits = 1 trillion, so it is designed to be sufficient for small calculations. [17-digit compact size] With fewer digits than the standard 23-digit size, it is lighter and more compact, making it easy to carry. It is also sufficient for small calculations. It is ideal for beginners and those using the abacus for the first time. [Reset in an instant] With just one switch, you can reset the abacus quickly, which will greatly increase your calculation speed. The compact size design allows you to quickly take it out and use it for small calculations, making it a recommended abacus for everyday use. If "Made in Japan.
