# Scientific calculator Donau TECH K-DT6004-13 — 417 functions, 150×85×19 mm, graphite

**URL:** https://aio.lv/en/product--donau-k-dt6004-13--12035312
**Data updated:** 2026-03-12 16:44 (EET)
**Category:** Calculators
**Manufacturer:** Donau
**Manufacturer code:** K-DT6004-13
**EAN:** 5901498125754
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 26.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 22.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--donau-k-dt6004-13--12035312

## 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 scientific calculator model K-DT6004-13 offers 417 functions in a compact 150×85×19 mm graphite body. Designed for mathematical, scientific and engineering calculations, it supports multi-function operations, standard algebraic and trigonometric calculations and practical portable use for students and professionals. Battery or power details not specified.

## Long description

Donau TECH K-DT6004-13 is a scientific calculator in a graphite finish that provides 417 built-in functions within a compact housing measuring 150×85×19 mm. The device is intended for mathematical, scientific and engineering calculations, supporting algebraic expressions, trigonometric functions and multiple-function operations in a portable format useful for students and professionals. Power source details are not specified.
Advantages
The calculator combines a high number of functions with a space-saving form factor, enabling complex calculations without occupying much desk space. Its graphite exterior offers a neutral appearance suitable for study or office environments. The unit's function set covers common needs for algebra, trigonometry and scientific computations, making it a versatile tool for routine and advanced tasks.
Suitable for
 High school and university students studying mathematics, physics or engineering
 Engineers and technicians performing routine scientific calculations
 Laboratory and classroom use where portable calculation is needed
 Anyone requiring a compact device with a broad set of functions for on-the-go work
Key specifications
 Functions: 417 built-in mathematical and scientific functions
 Dimensions: 150 × 85 × 19 mm (length × width × depth)
 Color/finish: graphite
 Operation modes: standard algebraic and trigonometric calculations, multi-function operations
 Form factor: portable handheld calculator suitable for desk or field use
How to use
Use the calculator by entering expressions via the keypad and selecting appropriate function keys for trigonometric, logarithmic or algebraic operations. For multi-step calculations, perform each step in sequence using parenthesis and memory or function keys as required by the calculation logic. Refer to on-device labels for function key combinations and mode selection. Because power source information is not provided, ensure the device is functional before critical use and consult accompanying materials for battery or power instructions if available.
Usage recommendations
Store the calculator in a dry place and protect it from extreme temperatures and impacts. For accurate results, use clear keypresses and verify mode settings (angle units, display mode) before performing trigonometric or advanced calculations.

## FAQ

### How much does the Donau TECH K-DT6004-13 scientific calculator cost, and is it available for purchase?

The price is 26.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2471 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/12035312/67522645_large.webp