


Genuine Casio JS-20B & JS-40B Calculators
Premium Casio JS-20B & JS-40B – The Standard for Finance Professionals
In the world of numbers, precision and speed are vital. The Casio JS-20B and JS-40B duo, part of the "Best Seller" premium line, are designed to meet the most rigorous standards of the finance, banking, and professional accounting industries.

Peak Design and Technology
Sophisticated Metal-Coated Surface
Unlike standard models, the JS-Series features a sophisticated metal faceplate. This not only adds a high-class look to your desk but also ensures long-lasting durability, effectively resisting scratches and impacts.
Display Options: 12 or 14 Digits
You can choose the model that best fits your specific workload:
- Casio JS-20B (12 Digits): Perfect for almost all corporate accounting tasks.
- Casio JS-40B (14 Digits): A specialized model for calculations involving trillions. It is exceptionally powerful and rare, designed for large-scale financial transactions.
Breakthrough Professional Features
Currency Exchange Function
This is a high-value feature that allows you to quickly convert between different foreign currencies based on pre-set rates. It is extremely useful for import-export businesses or international payment departments.
Smart Tax Calculation
Calculate price plus tax, price less tax, discounts, and profit margins with just a few simple steps, saving maximum time when processing documents and invoices.
Silent and Smooth Key Experience
The key system of the JS series is specially tuned by Casio to minimize noise. It also integrates Key Rollover technology, enabling lightning-fast data entry while maintaining 100% accuracy.
Detailed Product Specifications
| Technical Specifications | Casio JS-20B | Casio JS-40B |
|---|---|---|
| Order Code | 315570 | 315558 |
| Number of Digits | 12 digits | 14 digits |
| Dimensions | W109 x L176 x H21 mm | W109 x L176 x H21 mm |
| Weight | 190g | 190g |
| Color | Grey (Metal Faceplate) | Grey (Metal Faceplate) |
| Power Source | Solar + Battery | Solar + Battery |
| Unit | Piece | Piece |
| Warranty | 2-year genuine warranty | 2-year genuine warranty |
Conclusion
With an ultra-slim profile of only 21 mm and a solid, premium feel, the Casio JS-20B and JS-40B are more than just calculators—they are symbols of professionalism. Investing in the JS series is an investment in efficiency and accuracy for your career.




















