# Desktop calculator Donau TECH OFFICE K-DT5121-01, 12-digit display, 137×101×30 mm, black

**URL:** https://aio.lv/en/product--donau-k-dt5121-01--11799884
**Data updated:** 2026-03-09 07:36 (EET)
**Category:** Calculators
**Manufacturer:** Donau
**Manufacturer code:** K-DT5121-01
**EAN:** 5901503622872
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 8.67 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--donau-k-dt5121-01--11799884

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Donau TECH OFFICE desktop calculator K-DT5121-01 features a 12-digit LCD display and compact dimensions (137×101×30 mm). Designed for everyday office calculations, it supports basic arithmetic functions suitable for accounting, invoicing and general desk use. The black casing provides a durable, low-profile look for professional workspaces.

## Long description

Donau TECH OFFICE K-DT5121-01 is a compact desktop calculator with a 12-digit LCD display and a low-profile black housing measuring 137×101×30 mm. It is designed for routine office arithmetic and delivers clear numeric output for everyday accounting, invoicing and desk calculations. The physical design focuses on space efficiency and readable presentation of results on a wide, multi-digit screen.
Advantages
The calculator provides a 12-digit display that accommodates larger figures and reduces the need to switch units when handling multi-digit totals. Its compact footprint fits easily on crowded desks while the tactile keys enable straightforward numeric entry. The black casing offers a discreet, professional appearance and a durable surface that resists everyday wear in office environments.
Suitable for
 Basic accounting and bookkeeping tasks
 Invoicing and price calculations
 Everyday office arithmetic and budgeting
 Quick on-desk calculations in retail or administrative settings
Key specifications
 Display: 12-digit LCD
 Dimensions: 137 × 101 × 30 mm
 Color: black housing
 Functions: basic arithmetic (addition, subtraction, multiplication, division, percentage operations)
 Input: tactile numeric keypad suitable for frequent entry
How to use
Place the calculator on a flat surface and ensure the display is visible. Use the tactile numeric keys to enter figures and press the standard arithmetic operation keys to perform calculations. For percentage calculations, use the dedicated percentage key where available; clear entries with the clear key. Turn the device off according to the manufacturer's instructions or allow it to enter auto-off mode if provided to conserve power.
Usage recommendations
Keep the calculator on a stable, dry surface and avoid exposure to direct sunlight or excessive humidity to maintain display clarity and key responsiveness. Clean the casing with a soft, dry cloth; avoid liquid cleaners. For frequent accounting tasks, position the calculator within easy reach to improve workflow efficiency.

## FAQ

### How much does the Donau TECH OFFICE K-DT5121-01 desktop calculator cost, and is it available for purchase?

The price is 10.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2275 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 15.07.2026 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/11799884/67201278_large.webp