# Scientific calculator CASIO FX-991CEX — pocket scientific calculator, 2-line display, 12 digits, battery/solar, black (Works in Czech, Hungarian, Polish and Slovak languages ​​only)

**URL:** https://aio.lv/en/product--casio-fx-991cex--5070504
**Data updated:** 2026-04-23 10:39 (EEST)
**Category:** Calculators
**Manufacturer:** CASIO
**Manufacturer code:** FX-991CEX
**EAN:** 4549526602047
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 39.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 32.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--casio-fx-991cex--5070504

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

CASIO FX-991CEX is a pocket scientific calculator with a 2-line display and 12-digit precision. Housed in a plastic case (165.5 × 77 × 11.1 mm) and weighing 90 g, it runs on battery with solar assist. Built-in scientific functions support school and study tasks, offering portable calculation for classrooms, homework and exams where advanced math operations are needed.

## Long description

CASIO FX-991CEX is a pocket scientific calculator with a two-line display and 12-digit precision. The unit is housed in a plastic case and combines battery power with solar assist to extend operating time. Its compact dimensions (165.5 × 77 × 11.1 mm) and lightweight construction (90 g) make it suitable for portable use in classrooms, study sessions and exams.
Advantages
The calculator provides a clear two-line display that shows expressions and results simultaneously and supports 12-digit accuracy for numerical work. Its pocket form factor and plastic housing reduce weight while maintaining durability. Dual power (battery with solar assist) enhances reliability and reduces the need for frequent battery changes. Built-in scientific functions cover common school and university requirements for algebra, trigonometry and basic engineering calculations.
Suitable for
School mathematics and science lessons
Homework and self-study
College and university coursework requiring scientific calculations
Portable use during exams where allowed
Key specifications
Display: 2-line screen
Digits: 12-digit precision
Power source: Battery with solar assist
Housing material: Plastic
Form factor: Pocket-sized
Dimensions (H × W × D): 165.5 × 77 × 11.1 mm
Weight: 90 g
USB port: No
How to use
Switch the calculator on using the power key and enter expressions using the keypad; the two-line display shows the entered expression on one line and the result on the other. Use the function keys to access built-in scientific operations such as trigonometric, logarithmic and statistical functions. When ambient light is available, the solar cell supplements the battery to extend runtime; replace the battery only when the display becomes faint or the device fails to power on.
Usage recommendations
For reliable operation in classroom or exam environments, carry the calculator in a protective case to avoid damage, check battery level before important use, and consult permitted device lists for exams to confirm this model is allowed.

## FAQ

### How much does the CASIO FX-991CEX scientific calculator cost, and is it available for purchase?

The price is 39.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 01.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All CASIO products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized CASIO service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/5070504/51166024_large.webp