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The OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar Scientific Calculator (OS 991ES Plus) is a great calculator and worth the price for those who are looking for something simple. It has all the functions that you would need to help with your homework or even just your day-to-day tasks, like adding up numbers in recipes. The display screen is easy to read and shows a wide range of numbers from 0 – 100 as well as negative values. This product weighs only 6 ounces so it makes it really lightweight and portable

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

1. 417 Functions Scientific Calculator
2. Reading Instruction Attached
3. Written Display Scientific Calculator
4. Two Way Power Electronic Calculator
5. Ultra-light & Portable
6. Plastic Keys

1. 417 Functions Scientific Calculator

This calculator is great for doing chemistry, math, physics and other scientific equations. It has a large 2 line 10+2 digit display that shows you the answer of your equation in real time. The main screen also displays functions from A to Z so there’s no guesswork when looking up an important function like log or sinx.

2. Reading Instruction Attached

This calculator has a variety of functions for you to use, including 2. Reading Instruction Attached which will provide the user with an explanation of what each button does as they hover over it. It also comes with solar panels on either side so you never have to worry about batteries being low or your display going blank unexpectedly when out and about in bright sunlight!

3. Written Display Scientific Calculator

The OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar is an impressive scientific calculator that comes with 50 functions and 12 memory registers. It’s got a large LCD screen, which means you can see all the calculations clearly before you make them; this is especially important if you have to do lots of complex equations! The keys are sensibly arranged so your fingers won’t get in the way of what’s happening on-screen and it has backlighting for use in dark conditions too.

4. Two Way Power Electronic Calculator

The OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar Scientific Calculator (OS 991ES Plus) has an LCD display that’s easy to read in bright light, plus it features a solar panel on the back so you can use it as long as you want without having to worry about charging it. This calculator is perfect for students, teachers and scientists who need quick answers with accuracy.

5. Ultra-light & Portable

This is a solar powered calculator and it only takes two hours to fully charge the battery. You can use this handy tool on your trips or just in case you run out of batteries for other devices.

6. Plastic Keys

This calculator has a very sleek look with its plastic keys. The buttons on the front are large and easy to press, making it ideal for people struggling with arthritis or other hand conditions that make pressing smaller buttons difficult. It’s also great for those who find the backlit LCD screen cumbersome to use at night.

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

Our Rating: 4.4 Out of 5 Stars

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I found 16 customer reviews at the time of writing and they had awarded the OSALO Scientific Calculator 4.4 stars out of a possible 5 on average.
The customer reviews on Amazon are positive overall, with just one niggling point raised by an unhappy buyer who said, “It is too complicated to learn how to use”
No other customers seem to have experienced difficulties with learning how it works either so I recommend this model as well.

Conclusion

The OSALO Scientific Calculator 417 Function 2 Line 10+2 Digits Written Display Solar Scientific Calculator (OS 991ES Plus) is a highly rated scientific calculator with all the functions and features you would expect, plus it’s solar powered.

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About the Author

John Heiss

Founder & Expert Reviewer

As an expert reviewer, John provides honest and reliable reviews on consumer electronic goods. As a young boy, John was always tech-savvy and managed to get his hands on the latest technology. However, he had had enough of purchasing devices only to find out that there is so much that brands don’t tell you about their products, John wanted to do his part in improving this for fellow consumers by sharing his own experience. He did just that on products that he was familiar with and realized he has a talent for this. John then followed an education that is geared toward comprehending the anatomy of electronic devices and tools, and how they are built. As a young man, John landed his previous job as a product reviewer which allowed him to cultivate his expertise in the field and has now decided to do so for himself. As the founder of Office Electronics Hub and Tool Equip Zone, John is passionate about shedding light on the good and bad about products that he uses himself on a regular basis. He did just that on products that he was familiar with and realized he has a talent for this. John then followed an education that is geared toward comprehending the anatomy of electronic devices and how they are built. As a young man, John landed his previous job as a product reviewer which allowed him to cultivate his expertise in the field and has now decided to do so for himself. As the founder of Office Electronics Hub, John is passionate about shedding light on the good and bad about products that he uses himself on a regular basis.

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