Texas Instruments
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$13.19
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KBIBCK Scientific Calculator, FX-991ES Engineering Scientific Calculator with 417 Functions, 10+2 Digits Calculator School Scientific for University Engineering Middle School Office Teaching (White)
★★★★★
$13.19
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About this item
- 【Powerful 417 Functions】The scientific calculator is equipped with 417 functions, covering everything from basic arithmetic to matrix operations, statistical functions, and vector calculations. The FX-991ES engineering scientific calculator's responsive system produces quick results, making it an excellent tool for solving complex calculations in a timely manner, which meets the demanding requirements of university courses and technical professions.
- 【Clear Dual -Line Display】This engineering scientific calculator's 10+2 screen display allows simultaneous viewing of input and results. Whether you're working with complex equations, simple arithmetic, or graphs, the large screen of the scientific calculator ensures easy readability and reduces eyestrain during prolonged use.
- 【Multi-Functional Keyboard】The FX-991ES scientific calculator features a rich set of built-in scientific symbols and function keys, making it easy to handle a wide range of calculations. And the buttons on this engineering scientific calculator are engineered for responsiveness and durability. Each key provides tactile feedback to prevent misinputs, which significantly improves efficiency for those who frequently perform scientific calculations, such as teachers, engineers, university students.
- 【Durable & Portable】This engineering scientific calculator comes complete with a robust sliding hard case, which shields both the keys and the body from scratches, accidental knocks, and the rigours of daily life in a bag or desk, helping to keep it pristine for years to come. FX-991ES scientific calculator's design combines aesthetics with practicality, featuring a matte silver front panel and a blue back. Its compact and lightweight design makes it easy to carry around and use anywhere.
- 【Wide Application & Convenient Power】With its comprehensive feature set, this scientific calculator is suitable for a wide range of users, from middle school students to university professors and engineers. Besides, the engineering scientific calculator is powered by button batteries for stable and long-lasting power. Batteries can be replaced at any time, eliminating the need for frequent charging or reliance on unstable power sources.
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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