- 24% Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS

Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS

(11 customer reviews)

Original price was: $24.99.Current price is: $18.99.

Original price was: $24.99.Current price is: $18.99.

Editor’s Choice โ€” discover the Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS, built for performance and designed for life in the United States.

About Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers

  • 417 Calculation Functions: This scientific calculator offers 417 functions, including trigonometry, exponential and logarithmic functions, calculus, statistics, algebra, and other advanced mathematical operations. It also supports complex number calculations, matrix operations, vector calculations, and more, making it the perfect tool for a wide range of scientific and engineering applications.
  • Ultra-Large Display Screen: Featuring a significantly larger display than most models, the 991ES Plus Max makes reading calculations easier. The natural textbook display allows for clear reading of both formulas and results on a 4-line screen.
  • Ergonomic & Comfortable Grip: Designed for ease of use, this calculator features an ergonomic, contoured body that fits comfortably in your hand. Its anti-drop body design ensures durability, making it ideal for everyday use at school, work, or home.
  • Perfect for Students and Professionals: Designed to meet the needs of high school and college students, engineers, and professionals in fields such as science, business, and technology. Whether you’re tackling complex equations in the classroom or working on advanced calculations in the workplace, this calculator provides the essential tools for accurate and efficient problem-solving.
  • Customer Support: If you encounter any issues with your scientific calculator, feel free to reach out to us anytime. Our dedicated team is always available to assist you and ensure a smooth after-sales experience, providing prompt and satisfactory solutions.

The Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS combines reliability, modern design, and user-focused engineering. Perfect for everyday use, it delivers trusted results for American customers who value innovation.

Specification: Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS

Package Dimensions

8.35 x 4.37 x 1.22 inches

Item Weight

8.4 ounces

Item model number

UL-991ES PLUS Max

Batteries

1 Nonstandard Battery batteries required. (included)

Date First Available

March 4, 2025

Manufacturer

Guangzhou Cania Technology Co., Ltd

Photos: Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS

11 reviews for Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS

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  1. MsNovemberRain

    I bought this calculator for my middle schooler who is just starting algebra, and it has been a fantastic help. The big screen is the best part, it displays the problems just like they’re written in the textbook, which makes it much less confusing for them to follow along. While it has far more functions than needed for middle school, I know it’s a calculator that will last them well into high school and beyond. It feels sturdy, so I’m not too worried about it getting tossed around in a backpack. It’s a great choice for any student heading into more advanced math.

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  2. Compradora777

    My daughter needed a graphing calculator for college. As you may have noticed, they’re very expensive. What she really needed was a scientific calculator. It has more functions than a graphing calculator. Luckily, I found this one, which had everything my daughter needed at an excellent price: less than half the price of a graphing calculator. I’m so grateful to have found this calculator at this price. I recommend it 100%.

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  3. Amazon Customer

    Good scientific calculator, now my doter can use it in College

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    Last updated on October 19, 2025 5:34 am Details
    Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS
    Scientific Calculators, 991ES Ultra-Large Screen Calculator with 417 Function, 4-Line Display School Supplies for Middle High College Students Teachers Engineers by SPLAKS

    Original price was: $24.99.Current price is: $18.99.

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