CATIGA CS-121 Scientific Graphing Calculator
- Calculator Type: Scientific, Graphing, Engineering
- Display Type: LCD
- Power Source: Battery
- Screen Size: 3 inches
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A budget bridge between scientific and graphing calculators, with enough functions to carry a student from algebra through early calculus. Worth buying if graphing on a budget is the goal; skip it for basic coursework.
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ASIN: B07J65SZ46Model: 5582678373Category: Scientific Calculators
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Overview
The CATIGA CS-121 pairs scientific calculator functions with basic graphing, letting students plot equations and view the graph alongside the formula. It targets high school and college students moving from algebra into calculus and statistics without the cost of a full graphing calculator.
Catiga sells it with a 365-day warranty and a reset button on the back for the occasional lockup, tips the seller copy repeats twice. At 6.4 ounces and 7 by 3.3 inches, it is built to survive a backpack more than sit in a desk drawer.
- Graphing plus scientific functions in one unit
- 3 switchable calculation modes
- 7 x 3.3 inch compact body
- 6.4 ounce weight
Who it's for
Suited to a student stepping up from a basic scientific calculator who wants to see plotted functions without buying a premium graphing brand. Not the choice for someone who only needs arithmetic and trig, since the graphing features go unused.
Pros and cons
- Displays graph and formula together for checking work
- 360+ functions cover algebra through statistics
- Anti-drop housing plus included protective case
- 365-day warranty with 24-hour support response
- Amazon listing gives no model number field
- Bulkier than a plain scientific calculator
Performance notes
Three switchable modes adjust angle measurement, calculation and display so the same unit handles pre-algebra one class period and statistics the next. Over 360 functions cover fractions, complex numbers, linear regression and standard deviation, and the screen shows the plotted graph and its formula together so students can check work at a glance.
Specifications
| Brand | Catiga |
|---|---|
| Model | 5582678373 |
| Dimensions & fit | |
| Screen Size | 3 inches |
| Item Weight | 0.3 pounds |
| Item Dimensions L X W | 7 × 3.3 inches |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Enclosure Material | Plastic |
| Color | Black |
| Included components | |
| Unit Count | 1 |
| Number Of Packs | 1 |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Calculator Type | Scientific, Graphing, Engineering |
| Display Type | LCD |
| Number Of Items | 1 |
| Mfr Part Number | CS-121 |
Frequently asked questions
What is the difference between the CATIGA CS-121 and a basic scientific calculator?
The CS-121 adds graphing, letting it plot functions and show the graph next to the formula, which a standard scientific calculator cannot do.
Does the CATIGA CS-121 come with a case?
Yes, a protective case ships with the calculator alongside its anti-drop housing.
What if the CATIGA CS-121 will not turn on?
Catiga instructs users to press the reset button on the back of the unit.