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OSALO

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

    • Based on 299 reviews
Condition: New
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$19.99 Why this price?
Save $65.00 was $84.99

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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, May 22
Order within 1 hour and 34 minutes
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Features

  • 417 Functions Scientific CalculatorThe scientific calculator has 417 functions and covers the most scientific functions what college students need to use at university. 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. Written display expression same as textbook,convenient for students to check the calculation process and results.
  • Two Way Power Electronic CalculatorSolar and battery,double safe uninterruptible power,environmental protection and energy saving advantages.
  • Ultra-light & PortableNice color matching: Matte silver panel & blue back; Weight: 120g; Size: 162 x 80 x 14(mm)/6.4 x 3.2 x 0.6 (inch);Material: ABS plastic. Convenient to carry it outside and hold it on one hand.
  • Plastic KeysUse high quality plastic keys,and make keys in different area have different shape, to give you the most comfortable experience. Letters printed on keys are super clear.

Package Dimensions: 7.52 x 3.35 x 1.46 inches


Item Weight: 6.3 ounces


Item model number: OS-991ES PLUS


Batteries: 1 LR44 batteries required. (included)


Date First Available: May 9, 2020


Manufacturer: osalo co., ltd


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 22

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great calculator!
Exactly what I needed for Stats and Calc. Great product, light, easy-to-use, and has many functions. Delivered fast, highly recommend
Reviewed in the United States on January 30, 2023 by Amazon Customer
    • Amazing!
I’m a math teacher and I love this calculator to check my students work. One of my students showed it to me and I just had to buy one. We like to call it the “god calculator.” It leaves fractional answers as fractions and rationals with the square root! It’s so cool and I love it so much!
Reviewed in the United States on June 21, 2022 by Raymond Dangler
    • Small
A little smaller than I was thinking.
Reviewed in the United States on August 16, 2021 by Jenny
    • Good calculator for using
Good scientific calculator for using. Easy to use. The price is affordable so that every student can buy.
Reviewed in the United States on July 22, 2022 by Thomas D
    • Excellent and value for money
Got this for the students and they loved it. They needed a scientific calculator and was fun and easy navigating and using different functions.
Reviewed in the United States on June 17, 2022 by AG Vlogs
    • Finals math exam
I needed this for my college math exam and it made solving Logarithms so much easier
Reviewed in the United States on June 4, 2022 by Akira Patterson
    • DO NOT BUY...ITS NOT A CASIO!!
PIECE OF JUNK AND WASTE OF MONEY... every time I hit the first key, it never registers, and always have to pay attention to make sure it shows up on the screen. I don't want to worry about if it registered the number I pressed. They made it look exactly like a Casio into fooling people to buy it but it's not even close to the quality. DO NOT BUY!! WISH I COULD RETURN AND GET MY MONEY BACK. ... show more
Reviewed in the United States on September 14, 2022 by Jatinder Paul S. Bedi
    • I love it
It literally made my math exams easier! Better than the TI Texas
Reviewed in the United States on April 13, 2022 by Fatima

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