# Desktop calculator Donau 10-digit black — basic office calculator

**URL:** https://aio.lv/en/product--donau-509493--11799865
**Data updated:** 2026-03-09 07:36 (EET)
**Category:** Calculators
**Manufacturer:** Donau
**Manufacturer code:** 509493
**EAN:** 5901503620359
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--donau-509493--11799865

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Donau desktop calculator with a 10-digit display in black. A basic office calculator for everyday arithmetic tasks, offering clear numeric readout, standard function keys for addition, subtraction, multiplication and division, percent calculation and memory operations. Suited for bookkeeping, invoicing and general office or home use.

## Long description

Donau desktop calculator with a 10-digit display in black provides a straightforward solution for everyday arithmetic in the office or at home. The calculator includes standard function keys for addition, subtraction, multiplication and division, as well as percent calculation and basic memory operations. Its clear numeric readout and compact desktop form make it suitable for bookkeeping, invoicing and general calculations where a reliable, no-frills device is required.
Advantages
The calculator delivers clear, easy-to-read results on a 10-digit display and supports common arithmetic functions and percent calculations. Memory keys allow temporary storage of values to simplify multi-step calculations. Its compact desktop design and simple keypad layout reduce input errors and fit well on an office desk or home workspace.
Suitable for
Bookkeeping and basic accounting tasks
Invoice preparation and price calculations
Everyday office calculations and cost estimations
Home budgeting and simple arithmetic
Key specifications
Display: 10-digit numeric display for standard arithmetic results
Functions: addition, subtraction, multiplication, division, percent calculation
Memory: basic memory operations (M+, M-, MRC)
Color: black casing suitable for professional environments
Form factor: desktop design intended for stable placement on a desk
How to use
Place the calculator on a flat surface within easy reach. Use the numeric keypad and function keys to enter numbers and perform operations; the percent key handles common percentage calculations while memory keys store interim totals. For multi-step calculations, use the memory function to accumulate or recall values as needed. Turn the device off or use its clear key to reset the current entry.
Usage recommendations
For accurate bookkeeping and invoicing, verify entries before finalizing totals and use the memory keys to reduce repetitive input. Keep the calculator on a stable surface to avoid errors from accidental movement and protect the device from liquids and excessive heat.

## FAQ

### How much does the Donau 10-digit desktop calculator cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1190 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 07.07.2026 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 Donau 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 Donau 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/11799865/67201256_large.webp