Unshu-do One-Touch Abacus Soromatic 23 Digits SORO-MATIC

This is the SORO-MATIC one-touch abacus from Unshudo.
It comes with a convenient feature that allows you to easily clear the abacus by simply pressing the button on the top.
[Product Details]
- Manufacturer: Unshudo
- Model: SORO-MATIC
- Number of digits: 23 digits
[Condition]
There are no major noticeable stains, and it can still be used. (Please understand that there may be some minor scratches.)
How about using it for lessons, school classes, or certification exams?

The item for sale is as shown in the photos.
Thank you for your consideration.