TOVO 2026 Upgraded Scientific Calculator with Graphic Functions, Massive 3" Screen, 360+ Functions Multi-Mode Graphing Calculators for Students, High School & College, TS-259
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Availability:
In Stock.
Arrives
Tuesday, Apr 28
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Color: Graphite Black
Features
- 2026 Upgraded Design & Precision ControlStep up your academic game with the newly released TS-259. Featuring an upgraded navigation D-Pad, it allows for smoother menu scrolling and more precise graph movement. The modern, ergonomic aesthetic not only looks professional but is also designed for maximum comfort during long study sessions.
- Introductory Graphing for STEM SuccessPerfectly designed as an entry-level graphing tool for students. It supports essential function plotting and graph analysis, helping students visualize algebra and geometry concepts without the steep learning curve of high-end models. Its the ideal bridge between a standard scientific calculator and advanced graphing devices.
- 360+ Functions & Multi-Mode VersatilityEquipped with over 360 built-in advanced scientific functions, including fractions, complex numbers, statistics, and equation solving. With multiple calculation modes, it provides the versatility needed to handle high school and college-level math, science, and engineering coursework.
- Extra-Large 3" Screen: 3.25x VisibilityNever strain your eyes again. The TS-259 boasts a huge 3-inch screen, which is 3.25 times larger than regular scientific calculators. This massive viewing area ensures that multi-line formulas and introductory graphs are easily readable, reducing errors during high-pressure timed exams and long study sessions.
- Durable Protection & Portable DesignBuilt with a reinforced anti-drop body and sized at 7 x 3.3 inches for an ergonomic feel. This slim calculator easily slides into any backpack or pocket and includes a rugged, sliding hard cover to protect the oversized screen and tactical buttons from scratches and impacts.
Brand: CATIGA
Color: Graphite Black
Calculator Type: Graphing/Scientific
Power Source: Solar Powered, Battery Powered
Screen Size: 3.3 Inches
Calculator Type: Graphing/Scientific
Power Source: Solar Powered, Battery Powered
Screen Size: 3.3 Inches
Display Type: LCD
Color: Graphite Black
Enclosure Material: Plastic
Brand: CATIGA
Model Name: TS-259
UPC: 810185461035
Manufacturer: CATIGA
Mfr Part Number: TS-259-BK
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If you place your order now, the estimated arrival date for this product is:
Tuesday, Apr 28
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To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: 991-EX Black
Excellent and looks sharp too
Reviewed in the United States on March 12, 2026 by Jazz
Color: 991-EX Black
I was interested to see a new entry in the solar-powered scientific calculator product lineup, and one that actually brings back the possibility of functionality similar to the casio fx-991EX. There are basically three main calculators that are of roughly the same price that are solar-powered scientific calculators, with this CATIGA SS-991EX forming a strong fourth. They are now this CATIGA SS-991EX [hencefore catigaEX] casio fx-991CW, the Sharp EL-W516T, and the TI-36X Pro. The fx-991CW [henceforth casioCW] is basically a user interface change from the casio fx-991EX [henceforth casioEX]. The catigaEX is as close to a clone of the casioEX as one can get. There is a bit of a different color scheme for the buttons and case, but otherwise the layout is exactly the same. The menu system and capabilities also seem to be exactly the same as the casioEX. This is great news, in my opinion, for my tests show that the catigaEX is as fast as the casioEX, if not sometimes faster. I was not a fan of the new button layout and new menu system on the casioCW, and so the catigaEX is superior to it in my opinion, and I would actually give this as my first recommendation for a calculator in this price range and style now. All of the calculators I mentioned are going to work well for anything that does not require a graphing calculator, but the catigaEX has the fastest processor [the casioCW and casioEX have similar speed and the casioCW has a slightly better resolution screen, but hardly a dealbreaker]. A definite integral on the catigaEX is often instant and is at least 5x faster than the same calculation on the TI or Sharp calculators, about the same as the casio's. The catigaEX calculator also keeps square roots of values more consistently, allowing you to get exact answers. The catigaEX has all of the features that you'd expect from a scientific calculator except a GCD and LCM calculator. This is not a big deal to me, because the catigaEX does prime factorization which allows you to get these quite easily, but it is annoying that they didn't implement them nevertheless. ] The catigaEX does clear the memory of recent calculations whenever you switch modes or the calculator turns off [the same as in the casioEX or casioCW], which I find annoying. This means that if you wanted to keep a value for the next time you turn it on, it simply isn't possible. Again, the same as the casioEX or casioCW, the answer button is programmed to only keep the last value in the stack. (So if you did 2+1=3, and then put in 2+2=4, then went back to see 2+1=3, and typed +2 (Ans would be inserted for you) you would find 6, not 5.) So if you would like to use a previous result you have to scroll to it and enter it again or edit the equation from there. A huge improvement over the casioCW is that the catigaEX uses a power of 10 button correctly. The casioCW has reprogrammed the power of 10 button (commonly e or E button) such that it does not take operator precedence on the number preceding it. The catigaEX does the correct thing if you type 10/2E-5 by giving 5E5 (The casioCW would give 5e-5 which is why I do not recommend the casioCW given your other options.) I like the color scheme of the catiga better overall, though I miss the silver buttons from the casioEX. The build quality is very similar to the casioEX. It is a lightweight plastic calculator, but I find the button presses work well and I haven't found any problems with the ergonomics. The button layout works quite well and I find to be very easy to get used to. The TI36X pro still wins if you want memory, but it uses an old processor and is not the fastest for integration, if you care about that. Overall, any of the calculators will work, but the catigaEX is the among the fastest with the only other option still begin produced being the casioCW, which also has the best looking screen. I prefer the catigaEX over the casioCW, but either is faster than the TI36X Pro or Sharp EL-2516T. If you have a casioEX, then you may want to get a catigaEX as a backup since casio discontinued the casioEX. I'd say stick with casioEX or get a catigaEX over a casioCW, as either EX has all the same functionality (with the bonus of implementing the power of 10 button correctly). The catigaEX is my first recommendation for a solar-powered scientific calculator when you do not need graphing now.
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Reviewed in the United States on November 2, 2025 by Kyle B.
Color: Black
Love this calculator. It's not solar powered though. But great functionality except I wish the screen lit up. It's accurate. Lightweight.
Reviewed in the United States on February 15, 2026 by Andrea
Color: 991-EX Black
It’s a good value for the money.
Reviewed in the United States on February 2, 2026 by Thomas Jackson
Color: Graphite Black
It has great functionality
Reviewed in the United States on January 9, 2026 by H
Color: 991-EX Black
I brought it brand new and it looks great I start school Wednesday so it came in just in time I’m going back to school for Medical Billing and Coding wish me luck .
Reviewed in the United States on December 9, 2025 by Lataviau Brown
Color: Graphite Black
Ordered for my sons algebra math class but his teacher did not even know how to use it, had to return
Reviewed in the United States on September 30, 2025 by Colleen Davis
Color: 991-EX Black
If you’re doing Trigonometry or even calculus get this calculator, when it comes to inverse functions, it helps you so much because it gives you the number with a square root. If you did this on a T I 84 it would just give you decimal numbers instead of let’s say 1 over square root 3.
Reviewed in the United States on September 17, 2025 by 8 ball