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Item #:
129551635
OA-991EX Plus Scientific Calculator 552 Functions 2-Line 10+2 Digits Written ...
Item #:
129551635
0 ratings
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Imported from USA store
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What Stands Out
Extensive Functions
With 552 built-in functions, the OA-991EX Plus ensures comprehensive support for various scientific calculations, catering to students and professionals alike for all their mathematical needs.
Dual-Line Display
The clear 2-line display allows users to view inputs and results simultaneously, enhancing readability and making complex calculations easier to follow, perfect for both learning and teaching.
User-Friendly Design
The 10+2 digit capacity combined with a logical button layout simplifies operation, making it accessible for users at any level, from high school students to advanced researchers.
Product Details
| Color | black |
| Size | 991EX PLUS |
| UPC | Does not apply |
| MPN | Does not apply |
| Shipping | Free and Fast Two-day shipping. |
| Free Return | 30-Days Money Back Guarantee |
| Brand | DUPOTA |
| Tax | This item without tax. |
| EAN | 0726434206879 |
| Material | Does not apply |
| ISBN | 0726434206879 |
| Package Dimensions LxWxH | 6.65x3.54x1.14 Inches (16.9 x 9 x 2.9 cm) |
| Weight | 0.42 Pounds (190 grams) |
| Type | Does not apply |
| Model | Does not apply |
| Country of Origin | China |
Who Should Buy?
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Students
Ideal for high school and college students needing complex calculations for math, physics, or engineering courses.
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Professionals
Useful for professionals in fields like engineering or finance who require versatile calculation tools for projects.
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Researchers
Beneficial for researchers needing advanced functions and the ability to handle statistical data analysis efficiently.
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Casual Users
Not suitable for casual users who only need basic calculations and simple arithmetic functions at home.
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Young Children
Too complex for young children who require simple and intuitive devices for learning basic math skills.
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Tech-averse Users
May be challenging for those uncomfortable with technology or who prefer using smartphones for calculations.
Product Description
OA-991EX Plus Scientific Calculator 552 Functions 2-Line 10+2 Digits Written ...
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Customer Questions & Answers
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Question:
What functions does the OA-991EX Plus Scientific Calculator have?
Answer: It features 552 functions including exponents, matrix calculations, and statistics. -
Question:
Is the calculator suitable for both students and teachers?
Answer: Yes, it is designed for middle and high school students as well as teachers. -
Question:
What is the return policy?
Answer: We offer a 30-day return policy for a full refund if you are not satisfied.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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“Not madly expensive like I thought, and much quicker than promised.”
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6/7/2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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Features & Benefits
- 552 functions for diverse calculations including statistics and algebra.
- 2-line display minimizes errors by showing input and results together.
- Dual power supply with solar and battery ensures reliable use.
- Ultra-light and portable design, ideal for students and teachers.
- High-quality, responsive buttons for comfortable use.
- 30-day return policy for risk-free purchase.
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