# Keychain calculator MCD soft rubber donut — compact 8-digit basic calculator keyring

**URL:** https://aio.lv/en/product--mcd-5903420909555--11799797
**Data updated:** 2026-03-09 07:36 (EET)
**Category:** Calculators
**Manufacturer:** MCD
**Manufacturer code:** 5903420909555
**EAN:** 5903420909555
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 9.91 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mcd-5903420909555--11799797

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Portable keychain calculator by MCD in a soft rubber donut-shaped housing. Compact basic calculator designed for everyday arithmetic and on-the-go calculations; typically features an 8-digit display, simple operations (addition, subtraction, multiplication, division) and a keyring attachment. Suitable for quick checks, shopping, travel and as a novelty accessory on keys or bags.

## Long description

The MCD soft rubber donut keychain calculator is a compact 8-digit basic calculator integrated into a soft, donut-shaped housing with a keyring attachment. Designed for simple arithmetic on the go, it offers a small footprint that clips to keys, bags or belt loops so basic calculations are always within reach. The product combines a tactile rubber exterior with straightforward button layout and a clear numeric display for everyday use.
Advantages
The soft rubber housing provides shock absorption and a non-slip surface, while the donut shape reduces bulk on a keyring. An 8-digit display supports routine arithmetic tasks and the simple four-function keypad (addition, subtraction, multiplication, division) ensures intuitive operation. The integrated keyring attachment makes it easy to carry without requiring extra space in pockets or a bag.
Suitable for
Everyday quick calculations such as totals while shopping
Basic arithmetic checks during travel or commuting
Students or professionals needing a backup calculator for simple tasks
Novelty accessory on keychains, backpacks or purses
Key specifications
Form factor: donut-shaped soft rubber housing with keyring
Display: 8-digit numeric LCD
Functions: basic four-function arithmetic (addition, subtraction, multiplication, division)
Power: battery powered (compact coin cell or similar)
Portability: lightweight and compact for attachment to keys or bags
How to use
Attach the keychain calculator to a keyring or bag strap using the integrated ring. Replace the battery when the display dims, following the battery type indicated on the device. Use the numeric keypad and arithmetic keys to enter figures and perform calculations; press the clear key to reset the display between operations. Store the device away from prolonged exposure to water and extreme temperatures to maintain reliable performance.
Usage recommendations
For best results, keep the calculator dry and avoid heavy impact despite the soft rubber casing. Use it for quick checks and simple arithmetic rather than advanced scientific calculations. Replace the battery with the recommended cell type to ensure consistent display brightness and function.

## FAQ

### How much does the Keychain calculator MCD donut cost, and is it available for purchase?

The price is 11.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 08.07.2026 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 MCD 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 MCD 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/11799797/67201172_large.webp