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OSALO

OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar Calculators (OS 991ES Plus 2nd Edition)

    • Based on 527 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, May 25
Order within 22 hours and 55 minutes
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Style: OS 991ES PLUS Ⅱ


Features

  • 417 Functions Scientific CalculatorWith 417 functions for fractions, exponents, matrix calculations, statistics, integral, algebra, complex number calculations, standard deviation, solving for variables, permutations and combinations, and linear regression, Scientific Calculator covers most of the scientific functions that students from middle school through college will need to use in their courses and on exams. Reading instruction attached will help you know how to use and find these functions.
  • Written Display Scientific CalculatorInput expressions and arithmetic operations same as written form in the textbook, which is more easy to read than traditional calculators. The 2 line display shows both input and calculation results,convenient for students to check the calculation process and results.
  • Brightness Adjustment FunctionThe screen brightness can be adjusted by simple operation to get the best display effect, dimming to relieve eye fatigue, brightening to get clearer display results, to improve the calculation efficiency.
  • Dual Power Source Electronic CalculatorSolar and battery,double safe uninterruptible power,environmental protection and energy saving advantages.
  • Ultra-light & PortableWeight: 5.1oz. (145g); Size: 164 x 80 x 17(mm)/6.4 x 3.15 x 0.6 7(inch); Material: ABS plastic. With slide-on hard case, convenient to carry it outside and hold it on one hand.

Brand: OSALO


Color: Black


Calculator Type: Engineering/Scientific


Power Source: Solar Powered


Screen Size: 2.36 Inches


Product Dimensions: 6.4 x 3.15 x 0.1 inches


Item Weight: 5.3 ounces


Item model number: 991es Plus Ⅱ


Batteries: 1 LR44 batteries required. (included)


Date First Available: September 21, 2023


Manufacturer: OSALO


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Its perfect
Style: OS 82MS Pro
It works just fine. Can’t wait to use it on Monday to Ace my midterm's!!
Reviewed in the United States on October 22, 2023 by Double Raptor
    • Very hard toreador the display panel
Style: OS 991ES PLUS
Very hard to read display
Reviewed in the United States on September 10, 2023 by Mike
    • Quality calculator
Style: OS 991ES PLUS
Really love this one! It works pretty well!
Reviewed in the United States on October 2, 2023 by Alex
    • Just what we need
Style: OS 82MS Pro
This worked wonderful for my son's school. It does everything it is reliable. And the buttons were easy to push and the display was very good and able to read.
Reviewed in the United States on September 1, 2023 by Amanda C.
    • Great for use in any class that does not require a graphing calculator.
Style: OS 991ES PLUS
It is great for checking homework problems. It does fractions in fraction form; it simplifies radicals It will even solve simple equations and matrices. As a retired math instructor, I like to teach students how to use this to check their work. I still do tutoring and don't need to invest in a graphing calculator that costs over $100. You will only need a graphing calculator if you teacher/instructor requires one. ... show more
Reviewed in the United States on June 30, 2023 by mathcrazy
    • Perfect
Style: OS 991ES PLUS
Great school calculator,easy to use Just get it
Reviewed in the United States on September 4, 2023 by Alok SIngh
    • Excellent choice
Style: OS 991ES PLUS
Good Quality for the price . Nice screen and protective cover.
Reviewed in the United States on August 23, 2023 by J.A.
    • Bn
Style: OS 991ES PLUS
Todo bn
Reviewed in the United States on May 7, 2023 by Muy bn todo

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