# Desktop calculator Donau DONAU TECH K-DT4121-01 — 12-digit display, dimensions 199×153×31 mm, black

**URL:** https://aio.lv/en/product--donau-k-dt4121-01--11215346
**Data updated:** 2026-03-07 19:51 (EET)
**Category:** Calculators
**Manufacturer:** Donau
**Manufacturer code:** K-DT4121-01
**EAN:** 5901503615638
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--donau-k-dt4121-01--11215346

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Donau DONAU TECH K-DT4121-01 is a desktop/office calculator with a 12-digit display, intended for general arithmetic, accounting and office tasks. Its dimensions are 199×153×31 mm and it comes in black. The calculator provides a standard numeric keypad and display suitable for everyday calculations in business, retail or personal finance.

## Long description

Donau DONAU TECH K-DT4121-01 is a desktop calculator designed for everyday arithmetic, accounting and office tasks. The unit features a 12-digit display and a standard numeric keypad in a compact desktop form factor with dimensions 199×153×31 mm. Finished in black, the calculator provides clear numeric output and straightforward input for business, retail and personal finance calculations.
Advantages
The 12-digit display accommodates larger numbers and simple totals, reducing the need to switch devices for basic accounting. Its desktop size balances visibility and footprint, making it suitable for placement on office desks or retail counters. The standard keypad layout supports familiar data entry and minimizes training time for staff or personal users. The black finish offers a neutral appearance that integrates with most office environments.
Suitable for
General arithmetic and daily calculations
Small business bookkeeping and cash handling
Retail point-of-sale support for quick totals
Personal finance, budgeting and expense tracking
Key specifications
Display: 12-digit numeric display for larger totals and precise readout
Form factor: Desktop calculator designed for desk or counter placement
Dimensions: 199 × 153 × 31 mm providing a stable footprint
Color: Black housing for a neutral, professional look
Input: Standard numeric keypad with arithmetic function keys
How to use
Place the calculator on a flat surface within easy reach. Use the numeric keypad to enter numbers and the arithmetic keys to perform addition, subtraction, multiplication and division. The 12-digit display shows results and intermediate totals. For continuous calculations, follow standard operator sequencing and clear the entry when starting a new calculation or to reset the device.
Usage recommendations
Keep the calculator on a stable, dry surface and avoid exposing it to direct sunlight or liquids. Clean the housing and keys with a soft, dry cloth; do not use abrasive cleaners or solvents. For optimal visibility, position the calculator so the display faces the primary user and is free from glare.

## FAQ

### How much does the Donau DONAU TECH K-DT4121-01 desktop calculator cost, and is it available for purchase?

The price is 14.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6559 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 13.07.2026 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/11215346/62017029_large.webp