# Basic calculator CASIO SL-310UC-RD — 10-digit, battery/solar, 29 keys, percent/square root, pocket size (80×118×8 mm), red

**URL:** https://aio.lv/en/product--casio-sl-310uc-rd--1642504
**Data updated:** 2026-01-21 10:51 (EET)
**Category:** Calculators
**Manufacturer:** CASIO
**Manufacturer code:** SL-310UC-RD
**EAN:** 4549526700101
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 9.91 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--casio-sl-310uc-rd--1642504

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 4.99 EUR |

## Summary description

CASIO SL-310UC-RD is a basic pocket calculator in red with a 10-digit single-line display and 29 tactile keys. Powered by LR54 battery plus solar backup, it supports percent, square root, tax and profit calculations, and digit comma separation. Lightweight (50 g) plastic housing and compact dimensions (80×118×8 mm) make it suitable for everyday home, school and office use.

## Long description

The Casio SL-310UC-RD is a pocket-sized basic calculator with a 10-digit single-line display. It supports automatic tax calculations, time calculations and profit margin percent functions, and is powered by both solar and battery sources to ensure reliable operation in varying light conditions. The compact red design makes it convenient for everyday use and on-the-go calculations.
Advantages
The calculator performs automatic tax operations including price plus tax, price less tax, tax amount and related discount and margin calculations. A function command sign on the display shows the current arithmetic operation. Key rollover stores keystrokes in a buffer for uninterrupted high-speed input, while an extra-large display improves readability. Plastic keys are engineered for easy operation, and dual power (solar + battery) maintains functionality when light is insufficient.
Suitable for
Basic arithmetic and everyday calculations
Retail and small-business tax and discount computations
Quick profit margin and percentage checks
Time-based calculations involving hours, minutes and seconds
Key specifications
Brand: CASIO
Model: SL-310UC-RD
Display: 10 digits, single-line, extra-large
Power: Two-way (solar + battery)
Keys: Plastic keys with key rollover
Functions: Tax calculation, time calculation, profit margin percent, basic arithmetic
Color: Red
MPN: SL-310UC-RD
EAN: 4549526700101
How to use
Enter numbers and operations using the plastic keys; the function command sign on the display indicates the current operation (+, -, ×, ÷). Use the tax function keys to calculate price plus tax, price less tax and tax amounts. For time calculations, input hours, minutes and seconds as required and perform the desired arithmetic. Press the percent key (%) to calculate profit margins, discounts and ratio adjustments. The device will switch between solar and battery power automatically depending on light availability.
Usage recommendations
Keep the solar panel clean and avoid covering it to ensure optimal solar charging. Replace the battery according to the manufacturer’s instructions when solar power is insufficient. Store the calculator in a pocket or small compartment to protect the keys and display from scratches during transport.

## Specifications

| Feature | Value |
|---|---|
| Type | Basic |
| Weight | 0.05 kg |
| Form factor | Pocket |
| Battery type | LR54 |
| Number of batteries supported | 1 |
| Power source | Battery/Solar |
| Height | 8 mm |
| Width | 80 mm |
| Depth | 118 mm |
| Backlight display | No |
| Product colour | Red |
| Digits | 10 digits |
| Digit comma separator | Yes |
| Control type | Buttons |
| Display number of lines | 1 lines |
| Second display | No |
| Easy-to-read display | Yes |
| Housing material | Plastic |
| Ergonomic design | Yes |
| Display tilting | No |
| Keys quantity | 29 keys |
| Tax calculation | Yes |
| Profit calculation | Yes |
| Symbolic notation | Square root |
| Conversion between | Percent |
| Cover | No |

## FAQ

### How much does the CASIO SL-310UC-RD basic calculator 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 — 9 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 Thursday 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 CASIO 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 CASIO 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/1642504/53517541_large.webp