991ES Plus Scientific Calculator, Math Calculator with 417 Function, Solar Battery Power and 4-Line Display, School Supplies for Middle High College Students Teachers
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Highlights
- 【417 Calculation Functions】: The scientific calculators has 417 different calculation function built-in, including trigonometric function, exponential function,logarithmic function, calculus, statistics, algebra, and advanced mathematical functions.
- It also supports complex number calculations, matrix calculations, vector calculations, etc., and can meet the various scientific and engineering calculation needs.
- 【Large Screen Four-Line Display】: The scientific calculator adopts a four-line large screen design, which is convenient for users to read.
- It also supports the natural display,which can directly display input and output of mathematical formulas on screen, making complex calculations more intuitive.The key SHITT -MODE (SETUP) 🔽-6(◀️Continue▶️).Use ◀️ and ▶️ to adjust screen brightness.
- 【Dual Power】: This calculator has a built-in solar panel and durable battery, which can be used continuously for many years in indoor and outdoor environments, reducing the frequency of battery replacement and making it more economical.
- This also makes it the best choice for people who need to use it for a long time, such as school supplies, high school students, accountants, and non-programmable calculators.
- 【Multi-Functional Keyboard】: The calculator has a keyboard with many scientific symbols and function keys built-in, making it easy to perform various calculations and functions.
- Especially for people who need to perform scientific calculations frequently, this keyboard design can greatly improve their calculation efficiency, such as teachers, engineers, college students, nurses, and accountants.
- 【The Gift】: This calculator is very suitable for students in elementary school, junior high school,high school, college, engineers, nurses, and teachers, etc. It can meet their calculation needs in the fields of mathematics, science, and engineering.
Specifications
| Colour Name | Silver |
| Set Includes | <p><b>991ES PLUS Solar Scientific Calculator</b></p><p>1、The calculator can adjust the screen brightness using the following buttons.</p><p></p><p>SHIFT -MODE (SETUP) -（down arrow symbol）-6(Continue).Use LIGHT and BACK to adjust screen brightness.</p><p></p><p>2.Please initialize the calculator before performing any calculations.</p><p></p><p>SHIFT-9(CLR)-3(All)=(Yes)</p><p></p><p>3.The calculator is rich in functions, please read the User’s Guide before use.</p><p><br></p><p></p><p><b>NOTICE</b></p><p>1. Please allow a slight deviation in the measurement data.</p><p>2. Do not immerse in any liquid.</p><p>3. Keep dry.</p><p><br></p><p></p><p><b>THE SCREEN BRIGHTNESS CAN BE ADJUSTED</b></p><p>The calculator stands out with its large screen display, allowing you to view calculation results clearly. Additionally, you can adjust the brightness using buttons, according to your personal preferences and environmental needs.</p><p><br></p><p></p><p><b>COMFORTABLE ABS KEYS</b></p><p>This calculator features buttons made of comfortable ABS material, providing an excellent tactile experience. Whether you are performing quick calculations or using it for extended periods, the buttons offer a comfortable and smooth touch feel.</p><p><br></p><p></p><p><b>SOLAR POWER & BATTERY</b></p><p>This calculator is powered by both solar energy and battery. Solar energy provides sustainable power, while batteries serve as a backup power source when needed. This design enables the calculator to be conveniently used at any time and in any location.</p> |
991ES Plus Scientific Calculator, Math Calculator with 417 Function, Solar Battery Power and 4-Line Display, School Supplies for Middle High College Students Teachers
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