---
product_id: 533225881
title: "NEWYES 991ES Plus Scientific Calculator with Writing Tablet, 417 Function with Solar Battery, Professional Upgraded 991ES Plus Calculator Portable Notepad Back to School Supplies for Student, Teacher"
brand: "newyes"
price: "HK$551"
currency: HKD
in_stock: true
reviews_count: 13
category: "Newyes"
url: https://www.desertcart.hk/products/533225881-newyes-991es-plus-scientific-calculator-with-writing-tablet-417-function
store_origin: HK
region: Hong Kong
---

# 6.5-inch writable tablet 417 advanced functions solar + button battery power NEWYES 991ES Plus Scientific Calculator with Writing Tablet, 417 Function with Solar Battery, Professional Upgraded 991ES Plus Calculator Portable Notepad Back to School Supplies for Student, Teacher

**Brand:** newyes
**Price:** HK$551
**Availability:** ✅ In Stock

## Summary

> 🧠 Elevate your calculations and note-taking game—because brilliance deserves the best!

## Quick Answers

- **What is this?** NEWYES 991ES Plus Scientific Calculator with Writing Tablet, 417 Function with Solar Battery, Professional Upgraded 991ES Plus Calculator Portable Notepad Back to School Supplies for Student, Teacher by newyes
- **How much does it cost?** HK$551 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/533225881-newyes-991es-plus-scientific-calculator-with-writing-tablet-417-function)

## Best For

- newyes enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Friendly Dual Power:** Never run out of juice with solar energy backed by a replaceable button battery for uninterrupted use.
- • **Premium Responsive Keys:** Experience smooth, precise input with high-quality plastic keys designed for comfort and accuracy.
- • **Compact & Portable Design:** Foldable, dust-proof, and lightweight—perfect for on-the-go students and professionals who demand efficiency.
- • **Innovative Writable Tablet:** Jot down quick notes or formulas on the integrated 6.5-inch writing pad—erase or lock your ideas instantly.
- • **All-in-One Scientific Powerhouse:** Master complex calculations with 417 versatile functions including matrices, vectors, and statistical analysis.

## Overview

The NEWYES 991ES Plus is a professional-grade scientific calculator featuring 417 functions, including advanced matrix and vector operations, powered by solar energy with a backup button battery. It uniquely integrates a 6.5-inch writable tablet for note-taking, housed in a foldable, portable design with premium responsive keys, making it ideal for students and professionals seeking efficiency and versatility.

## Description

Free delivery on eligible orders. Buy NEWYES 991ES Plus Scientific Calculator with Writing Tablet, 417 Function with Solar Battery, Professional Upgraded 991ES Plus Calculator Portable Notepad Back to School Supplies for Student, Teacher at desertcart UK.

Review: good quality but not to use on exams - it is really good quality my daughter loves that she can write on the screen, but apparently she is not allowed to use it when she does her GCSE exam, not sure about other schools. overall it's really good and easy to use.
Review: A Versatile Calculator with Clever Stylus Pad – Great for A-Level and Engineering! - Surprisingly useful calculator for A-Level, Engineering etc. The stylus-notepad is fun, useful and conveniently easy to use. The calculator is a standard scientific, broadly in line with the old workhorse Casio fx-991EX. Under the MODE menu we have: 1. COMP 2, CMPLX 3. STAT (1 variable and 2-Variable Regression of all kinds) 4. BASE-N (DEC, HEX, BIN, OCT; includes logic functions e.g. XNOR, NEG) 5. EQN (Up to cubics; others available via the SOLVE function) 6. MATRIX (Up to three 3 x 3) 7. TABLE (Single function f(x) only) 8. VECTOR (2-dim or 3-dim with dot and cross product) Good to have the functions accessible via buttons rather than deep menus. Factorial, nCr and nPr for example, are accessible using only the SHIFT key. The very useful ":" multi-statement button enables you to show a sequence of calculations with successive presses of the = button, and the ANS key adds another layer of useful recursion. Numerical differentiation and integration work fine, and there's a Sigma template for summing single-variable functions over a given range. All in all, good value for money and the folder stylus pad makes the most useful calculator cover out there.

## Features

- 【Scienticfic Calculator with Notepad】Come with a 6.5 inch writing tablet and a pen, which allows you to take notes while calculating. You can press the delete button to erase the notes, and also can lock it to keep it.
- 【417 Computing Functions】 Include CALC, SOlVE, Base-N, EQN, MATRIX, MATRIX, TABLE, VECTOR, fractions, variable statistics, complex number calculations, linear regression, base arithmetic, computer science, standard deviation, and polar-rectangular conversions, etc..
- 【More Sensitive Key】Adopt premium plastic material key, which makes it more sensitive and more precise than silicone key. Comfortable to touch.
- 【Solor Energy】Solar panel + replaceable button battery for smooth trial and long battery life.
- 【Foldable & Portable】NEWYES Calculator Notepad is foldable, closed to dust, easy storage, easy to carry. Ideal for junior & high school students, college students and professional researchers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C64T6XFG |
| Batteries | 1 9V batteries required. (included) |
| Best Sellers Rank | 8,251 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 30 in Scientific Calculators |
| Brand | NEWYES |
| Colour | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,324) |
| Date First Available | 24 May 2023 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Item Weight | 153 g |
| Manufacturer | NEWYES |
| Manufacturer Part Number | NY991ES |
| Material Type | Plastic |
| Model Number | NY-991ES Plus |
| Number of Items | 1 |
| Product Dimensions | 16.2 x 1.75 x 8.1 cm; 153 g |

## Product Details

- **Brand:** NEWYES
- **Calculator Type:** Engineering/Scientific
- **Colour:** Black
- **Display type:** LCD
- **Material:** Plastic
- **Model name:** NY-CAL
- **Number of batteries:** 1 9V batteries required. (included)
- **Power source:** Battery Powered
- **Product dimensions:** 16.2L x 1.8W centimetres
- **Screen size:** 6.5 Inches

## Images

![NEWYES 991ES Plus Scientific Calculator with Writing Tablet, 417 Function with Solar Battery, Professional Upgraded 991ES Plus Calculator Portable Notepad Back to School Supplies for Student, Teacher - Image 1](https://m.media-amazon.com/images/I/71BT64LmInL.jpg)

## Available Options

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

## Questions & Answers

**Q: How do you delete the writing? Pressing the button as per instryctions doesn't work. Also the video showing how to retrieve the stylus is useless.**
A: I have two of these calculators and both work fine. The big round button at the top (to the right side of the solar panel) will clear the writing. Maybe you have a faulty one. The pen just slides out.

**Q: where is the stylus? i can't find it..**
A: please see the video, thanks.

**Q: how long the batteries in these LCD display last?**
A: a year or more and it depends on how many times you use.

**Q: How do you change the battery? Mine arrived dead.**
A: Unscrew the screw and unclip/slide it out.

## Customer Reviews

### ⭐⭐⭐⭐⭐ good quality but not to use on exams
*by A***H on 22 June 2025*

it is really good quality my daughter loves that she can write on the screen, but apparently she is not allowed to use it when she does her GCSE exam, not sure about other schools. overall it's really good and easy to use.

### ⭐⭐⭐⭐⭐ A Versatile Calculator with Clever Stylus Pad – Great for A-Level and Engineering!
*by T***R on 29 May 2025*

Surprisingly useful calculator for A-Level, Engineering etc. The stylus-notepad is fun, useful and conveniently easy to use. The calculator is a standard scientific, broadly in line with the old workhorse Casio fx-991EX. Under the MODE menu we have: 1. COMP 2, CMPLX 3. STAT (1 variable and 2-Variable Regression of all kinds) 4. BASE-N (DEC, HEX, BIN, OCT; includes logic functions e.g. XNOR, NEG) 5. EQN (Up to cubics; others available via the SOLVE function) 6. MATRIX (Up to three 3 x 3) 7. TABLE (Single function f(x) only) 8. VECTOR (2-dim or 3-dim with dot and cross product) Good to have the functions accessible via buttons rather than deep menus. Factorial, nCr and nPr for example, are accessible using only the SHIFT key. The very useful ":" multi-statement button enables you to show a sequence of calculations with successive presses of the = button, and the ANS key adds another layer of useful recursion. Numerical differentiation and integration work fine, and there's a Sigma template for summing single-variable functions over a given range. All in all, good value for money and the folder stylus pad makes the most useful calculator cover out there.

### ⭐⭐⭐⭐ Sturdy and great value
*by S***Y on 5 February 2026*

Works well and is quite sturdy however it should come with more instructions as the calculator was rounding up and I couldn’t figure out how to change it. Eventually found out

## Frequently Bought Together

- NEWYES Scientific Calculator, 991ES Plus with Writing Tablet, 417 Function, Folding Protective Cover Suitable for Secondary School, University, Graduate students, Engineers
- Helix Oxford Maths Set with Storage Tin - 10 Piece Maths Equipment Set
- Pritt Glue Stick, Safe & Child-Friendly Craft Glue for Arts & Crafts Activities, Strong-Hold adhesive for School & Office Supplies, 22 g (Pack of 3)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-02*