My Thoughts on the ROATEE Upgraded 991ES Plus Desktop Scientific Calculator

As I explore the world of scientific calculators, I’ve come across the ROATEE Upgraded 991ES Plus, and I’m intrigued by its unique features. ROATEE was kind enough to send us a sample so today I’m here to report on my experience using it over the last 2 weeks.

With 417 computing functions and an integrated writing tablet, it’s not your average calculator. But is it worth the investment for students and professionals? Today I’ll be taking a closer look at its design, functionality, and how it stacks up against competitors.

Whether you’re crunching numbers for advanced math or need a reliable tool for your scientific work, you’ll want to know if this calculator delivers on its promises. Let’s see what sets it apart and where it might fall short.

Key Takeaways

• ROATEE’s calculator offers 417 computing functions, matching the Casio 991ES Plus and 991EX models in functionality.
• It features a unique integrated notebook with stylus for note-taking alongside calculations.
• The device has a lightweight design at 5 ounces and measures 6.97 x 3.74 x 0.04 inches.
• A multiview 4-line display enhances visibility for complex calculations.
• The calculator uses a dual power system with solar panel and replaceable coin battery for reliability.

Key Features and Functions

Offering an impressive 417 computing functions, the ROATEE 991ES Plus surpasses many of its counterparts in functionality.

I’ve found that this calculator integrates calculation capabilities with a unique notebook feature, complete with a stylus pen for note-taking. It’s a lightweight device at just 5 ounces, making it perfect for both business professionals and college students on the go.

One of the standout features I’ve noticed is the multiview 4-line display, which greatly enhances visibility during complex calculations. The calculator offers conversion between fraction and decimal modes, a feature I find particularly useful for various mathematical applications.

While it shares similarities with Casio 991ES Plus and 991EX models, it’s crucial to mention that it lacks some advanced features like spreadsheet and QR code functions found in the EX model.

The dual power system, combining a solar panel with a replaceable coin battery, guarantees you’re never caught off guard during critical calculations.

Design and Build Quality

The ROATEE Upgraded 991ES Plus is a demonstration of thoughtful design and sturdy construction. I’m impressed by its lightweight yet durable build, weighing just 5 ounces and measuring 6.97 x 3.74 x 0.04 inches. The anti-drop body design gives me peace of mind, knowing it can withstand accidental falls.

One of the standout features is the multiview 4-line display, which enhances visibility during complex calculations. The integration of a writing tablet with a lock/unlock mechanism is ingenious, preventing accidental erasure of your notes. However, I must warn you that the included stylus is small and easy to misplace.

The dual power system, combining a solar panel and replaceable coin battery, guarantees you’ll never be caught without power. While the calculator lacks backlighting, its overall design and build quality make it a solid choice for students and professionals alike.

Display and Interface

Moving from the physical aspects to the user interaction, let’s examine the ROATEE 991ES Plus’s display and interface. The calculator boasts a multiview 4-line display, which I find particularly useful for complex calculations. This feature allows you to see more of your work at once, reducing the need to scroll through previous steps.

One of the greatest features is the integrated writing tablet with a stylus pen. I appreciate how this combines calculation and note-taking capabilities in one device. However, be aware that the stylus is quite small and easy to misplace. The tablet includes a lock/unlock mechanism to prevent accidental erasure, which I consider a thoughtful addition.

The interface is similar to that of Casio 991ES Plus and 991EX models, so if you’re familiar with those, you’ll feel right at home. You can easily switch between fraction and decimal modes, and the 417 computing functions offer plenty of versatility.

While it lacks some advanced features like spreadsheet functionality, the well-placed keys guarantee accurate input. I’ve found no issues with missed key presses, making for a smooth user experience overall.

Battery Life and Power Options

When it comes to powering the ROATEE 991ES Plus, you’ll find a dual power system that offers both convenience and longevity. This calculator utilizes both a solar panel and a replaceable coin battery, ensuring you’re never left without power when you need it most.

The solar panel is a standout feature, harnessing light energy to keep your calculator running during regular use. This means you won’t have to worry about frequent battery changes, as the solar power prevents unnecessary battery depletion. It’s an eco-friendly option that’ll save you money in the long run.

For times when light isn’t available, the included coin battery steps in. It’s easily replaceable when needed, though you’ll likely find that the solar panel extends its life considerably. The dual power system is particularly useful for students and professionals who rely on their calculators daily.

I appreciate the thought put into the power design of this calculator. It’s clear that ROATEE understands the importance of reliable power for a device that’s critical for academic and professional tasks.

Comparison With Competitor Models

Among scientific calculators, the ROATEE 991ES Plus holds its own against popular competitors. It shares many features with the Casio 991ES Plus and 991EX models, offering similar functionality for most users. However, it is essential to recognize that the ROATEE model lacks some advanced features found in the Casio 991EX, such as spreadsheet and QR code functions.

Where the ROATEE calculator truly stands out is its integrated writing tablet, a feature not commonly found in competing models. This unique addition allows for quick note-taking and problem-solving alongside calculations, potentially giving it an edge for students and professionals who frequently jot down ideas or workings.

Let’s compare key features of the ROATEE 991ES Plus with its main competitors:

Feature	ROATEE 991ES Plus	Casio 991ES Plus	Casio 991EX
Computing Functions	417	417	552
Writing Tablet	Yes	No	No
Spreadsheet Function	No	No	Yes
QR Code Generation	No	No	Yes

While the ROATEE model may lack some advanced functions, its writing tablet and competitive price point make it a strong contender in the scientific calculator market.

Final Thoughts

I’ve found the ROATEE Upgraded 991ES Plus to be a game-changer in scientific calculators. Its 417 functions and integrated writing tablet have streamlined my work. The portable design and durable build mean I can take it anywhere without worry.

The multiview display and dual power system guarantee I’m never left hanging. While it faces stiff competition, I’d say it’s a top contender for students and professionals who need a reliable, feature-packed calculator.