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header-product Scientific Calculator Casio fx-991DE CW Pocket 12 Digits Black
51.49 €
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AiO.lv Stationery Desk Organization Calculators CASIO

Scientific Calculator Casio fx-991DE CW Pocket 12 Digits Black

Scientific Calculator Casio fx-991DE CW Photo 1
Scientific Calculator Casio fx-991DE CW Photo 2
Scientific Calculator Casio fx-991DE CW Photo 1
Scientific Calculator Casio fx-991DE CW Photo 2
Scientific Calculator Casio fx-991DE CW Photo 1
Scientific Calculator Casio fx-991DE CW Photo 2
Scientific Calculator Casio fx-991DE CW Photo 1
Scientific Calculator Casio fx-991DE CW Photo 2
Scientific Calculator Casio fx-991DE CW Pocket 12 Digits Black
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Scientific Calculator Casio fx-991DE CW Pocket 12 Digits Black

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

The Casio fx-991DE CW is a pocket scientific calculator featuring 12 digits, a currency converter, and battery power. Its compact design makes it ideal for students and professionals alike, providing essential functions for mathematics, science, and engineering calculations.
Available for order: 56 pcs.
Warranty: 2 Years
SKU: 8771900
Learn more
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
28.10.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
02.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.20 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
02.11.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Bank transfer
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Product information

Description

The Casio fx-991DE CW Pocket scientific calculator is a compact, battery-powered device with a 12-digit display designed for everyday calculations in mathematics, science and engineering. Its small form factor fits easily into a pocket or pencil case while providing essential scientific functions, a currency converter and straightforward numeric input for quick results. The calculator supports common scientific operations and offers a clear display suitable for study, homework and on-the-go problem solving.

Advantages

The calculator combines a 12-digit LCD with battery power for reliable operation without dependence on solar light. A built-in currency converter simplifies basic currency calculations while numerous scientific functions cover trigonometry, logarithms, powers and roots. Its compact and lightweight housing ensures easy portability and everyday durability. The user interface is designed for clear key labeling and simple entry, reducing input errors during exams or fieldwork.

Suitable for

  • School and university mathematics courses
  • Engineering and physics problem solving
  • Everyday technical calculations and conversions
  • Exam practice and homework tasks

Key specifications

  • Display: 12-digit LCD screen for numerical output
  • Power source: battery powered for consistent operation
  • Functions: scientific functions including trigonometric, logarithmic, exponential, powers and roots
  • Special feature: integrated currency conversion capability
  • Form factor: pocket-sized, lightweight handheld design
  • Input: standard scientific keypad with clearly labeled keys

How to use

Turn the calculator on with the power key and enter numbers using the keypad. Select scientific functions via the labeled function keys and use the mode key to switch between calculation types where applicable. For currency conversion, enter the amount and follow the currency conversion key sequence provided in the user reference. Results appear on the 12-digit display and can be reviewed or edited using the clear and backspace keys. Routine battery replacement is straightforward and described in the device manual.

Usage recommendations

Store the calculator in a protective case when not in use to avoid key wear and screen scratches. Replace the battery before it becomes too weak to ensure accurate results, and consult the manual for permitted functions during formal exams to ensure compliance with testing rules.

All features
Type: Characteristics of the device.
Scientific
Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.095 kg
Form factor: The shape or design of the product.
Pocket
Power source: What is providing power for the product e.g. mains electricity.
Battery
Height: The measurement of the product from head to foot or from base to top.
77 mm
Width: The measurement or extent of something from side to side.
10.7 mm
Depth: The distance from the front to the back of something.
162 mm
Product colour: The colour e.g. red, blue, green, black, white.
Black
Digits: Amount of numerals from 0 to 9, which device can display.
12 digits
Built-in capability: The capability of the built-in placement of device.
No
Control type: The way in which the device is controlled.
Buttons
Ergonomic design:
No
Built-in processor: Whether or not a processor is built into the device.
No
Display tilting: The display can be moved through a vertical plane to point either up or down, so it can be seen from different angles.
No
Currency converter:
Yes
Display type: Type of display (screen) e.g. LCD.
LCD
Symbolic notation:
Square root, Pi, Fraction
USB port: The device features a socket into which a USB cable can be plugged.
No
Cover:
Yes

Description

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Customer questions

FAQ

How much does the Scientific Calculator Casio fx-991DE CW cost, and is it available for purchase?

The price is 51.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 56 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 28.10.2026 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. 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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