---
product_id: 583310733
title: "OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar and Battery Calculators for Students Secondary School College Black (OS 991ES Plus 2nd Edition)"
brand: "osalo"
price: "9569 som"
currency: KGS
in_stock: true
reviews_count: 8
category: "Osalo"
url: https://www.desertcart.kg/products/583310733-osalo-scientific-calculator-417-function-2-line-10-2-digits
store_origin: KG
region: Kyrgyzstan
---

# Dual solar & battery power 2-line written display 417 advanced functions OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar and Battery Calculators for Students Secondary School College Black (OS 991ES Plus 2nd Edition)

**Brand:** osalo
**Price:** 9569 som
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your study game with precision and style!

## Quick Answers

- **What is this?** OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar and Battery Calculators for Students Secondary School College Black (OS 991ES Plus 2nd Edition) by osalo
- **How much does it cost?** 9569 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/583310733-osalo-scientific-calculator-417-function-2-line-10-2-digits)

## Best For

- osalo enthusiasts

## Why This Product

- Trusted osalo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Customize Your View:** Adjustable screen brightness reduces eye strain and boosts focus during long study sessions.
- • **Power That Never Quits:** Dual solar and battery power ensures uninterrupted use—eco-friendly and reliable anytime, anywhere.
- • **Master Every Calculation:** 417 versatile scientific functions from algebra to statistics, perfect for middle school to college coursework.
- • **See It Like Your Textbook:** 2-line written display mirrors textbook notation for effortless input and error-free results.
- • **Carry Smart, Calculate Smarter:** Ultra-lightweight design with a protective slide-on case fits perfectly in your backpack or hand.

## Overview

The OSALO Scientific Calculator OS 991ES Plus 2nd Edition offers 417 comprehensive functions including fractions, matrices, and regression analysis. Featuring a 2-line written display for clear input and results, it runs on dual solar and battery power for reliability. Its adjustable brightness and ultra-light design with a protective case make it an ideal companion for students from secondary school through college.

## Description

OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar and Battery Calculators for Students Secondary School College Black (OS 991ES Plus 2nd Edition): desertcart.co.uk: Stationery & Office Supplies

Review: Large numbers - Fantastic. Accurate. Big numbers. Thats what i needed
Review: Perfect for school - Perfect for what we need at school!

## Features

- 【417 Functions Scientific Calculator】With 417 functions for fractions, exponents, matrix calculations, statistics, integral, algebra, complex number calculations, standard deviation, solving for variables, permutations and combinations, and linear regression, Scientific Calculator covers most of the scientific functions that students from middle school through college will need to use in their courses and on exams. Reading instruction attached will help you know how to use and find these functions.
- 【Written Display Scientific Calculator】Input expressions and arithmetic operations same as written form in the textbook, which is more easy to read than traditional calculators. The 2 line display shows both input and calculation results,convenient for students to check the calculation process and results.
- 【Brightness Adjustment Function】The screen brightness can be adjusted by simple operation to get the best display effect, dimming to relieve eye fatigue, brightening to get clearer display results, to improve the calculation efficiency.
- 【Dual Power Source Electronic Calculator】Solar and battery,double safe uninterruptible power,environmental protection and energy saving advantages.
- 【Ultra-light & Portable】Weight: 5.1oz. (145g); Size: 164 x 80 x 17(mm)/6.4 x 3.15 x 0.6 7(inch); Material: ABS plastic. With slide-on hard case, convenient to carry it outside and hold it on one hand.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJLC75XS |
| Best Sellers Rank | 2,072 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 11 in Scientific Calculators |
| Brand | OSALO |
| Brand Name | OSALO |
| Calculator Type | Engineering/Scientific |
| Colour | black |
| Country of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 1,813 Reviews |
| Display Type | LCD |
| Enclosure Material | Plastic |
| Item Dimensions L x W | 16.4L x 1.7W centimetres |
| Item Weight | 0.15 Kilograms |
| Manufacturer | Osalo co., ltd |
| Model Name | OS 991ES Plus 2nd Edition |
| Number of Batteries | 1 LR44 batteries required. (included) |
| Number of batteries | 1 LR44 batteries required. (included) |
| Power Source | Battery & Solar |
| Power source | Battery & Solar |
| Screen Size | 6 |
| Screen size | 6 |
| UPC | 730637240479 |

## Product Details

- **Brand:** OSALO
- **Colour:** Black
- **Calculator Type:** Engineering/Scientific
- **Power source:** Battery & Solar
- **Screen size:** 6
- **Number of batteries:** 1 LR44 batteries required. (included)
- **Model name:** OS 991ES Plus 2nd Edition
- **Material:** Plastic
- **Product dimensions:** 16.4L x 1.7W centimetres
- **Display type:** LCD

## Images

![OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar and Battery Calculators for Students Secondary School College Black (OS 991ES Plus 2nd Edition) - Image 1](https://m.media-amazon.com/images/I/71hSDGrjRzL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Large numbers
*by M***N on 1 November 2025*

Fantastic. Accurate. Big numbers. Thats what i needed

### ⭐⭐⭐⭐⭐ Perfect for school
*by S***I on 24 November 2025*

Perfect for what we need at school!

### ⭐⭐⭐⭐ Good product
*by L***E on 16 September 2025*

Working well - no issues .

## Frequently Bought Together

- OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar and Battery Calculators for Students Secondary School College Black (OS 991ES Plus 2nd Edition)
- BIC 4 Colours Original Pens, Multi Coloured Pens All In One, Biro Pens, Medium 1.0mm, Green, Blue, Red, Black, 3 Pens Per Pack, 1 Pack
- Zamasha Clear Pencil Case Black | 22x4x9 cm Stylish, Practical and Transparent Pencil Case | Versatile Storage for Stationery, Toiletries, Makeup, Travel & Office Supplies

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**Shop now:** [https://www.desertcart.kg/products/583310733-osalo-scientific-calculator-417-function-2-line-10-2-digits](https://www.desertcart.kg/products/583310733-osalo-scientific-calculator-417-function-2-line-10-2-digits)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-02*