Verdict: The Casio CA-500 is worth buying if you want a tactile, retro conversation piece that still tells time and performs quick eight-digit calculations. Its metal case and bracelet feel more special than the resin CA-53W, while the positive-display silver and gold versions remain practical to read. It is not a smartwatch or a luxury bracelet watch; its appeal is the satisfying keypad, vintage styling and connection to Casio’s early multifunctional designs.
What the Casio CA-500 is—and why it exists
The CA-500 is a metal calculator watch family inspired by Casio’s 1976 CQ-1 combination clock-calculator. Casio describes it as: “Take a step back to 1976 with a timepiece that pays homage to the world’s first multifunctional digital clock, the Casio CQ-1.”
That lineage matters because the CA-500 is deliberately old-fashioned. It combines a conventional digital watch with a physical calculator keypad instead of notifications, Bluetooth or health tracking. The design is a modern tribute rather than a faithful reissue of a 1970s case.
For historical context, Casio released the C-80 in 1980, and the CA-53W became its best-known calculator watch after its 1988 introduction. Those models established the visual language that the CA-500 updates with a metal case and bracelet.
#1 Best Overall
- 8-Digit Calculator; Constants for addition, subtraction, multiplication and division
- Water Resistant
- 1/100 second stopwatch; Measuring capacity: 23:59'59.99"; Measuring modes: Elapsed time, split time, 1st-2nd place times
- Auto Calendar (pre-programmed until the year 2079)
- Size of case/total weight; 42.0 x 33.0 x 7.0mm / 29g
Specifications and everyday wear
| Specification | CA-500 detail |
|---|---|
| Dimensions | 43.2 × 34.4 × 8.2 mm (Casio specification, accessed 2026) |
| Weight | 53 g (Casio specification, accessed 2026) |
| Calculator | Eight-digit keypad calculator |
| Time functions | Regular digital timekeeping and dual time |
| Timing | 1/100-second stopwatch |
| Calendar | Full auto-calendar |
| Alerts | Daily alarm and hourly signal |
| Battery | CR2016; approximately five years according to Casio |
| Water protection | Water resistant, as Casio states; not specified as a swimming or diving watch |
At 8.2 mm thick and 53 g, the CA-500 sits unobtrusively on the wrist. The tapering stainless-steel bracelet is comfortable and can be sized with its adjustable clasp. The hands-on experience described it as lightweight rather than luxury-grade, so the metal construction adds visual and tactile value more than substantial bracelet heft.
Can you actually use the calculator?
Yes. The keypad is functional, not merely decorative. It is suited to quick arithmetic—adding a bill, splitting a total or checking a percentage—when taking out a phone would be excessive. The eight-digit limit is generous for everyday calculations but far below a scientific calculator’s capabilities.
Rank #2
- Movement:Quartz
- Case Thickness (mm.):9 mm
- Case Width (mm.):34
- Clasp:Buckle
- Case Height (mm.):43
Using it is intentionally tactile: press the small dedicated keys, read the result on the digital display and return to timekeeping when finished. The experience is slower and less capable than a phone, but that is also the point. The CA-500 turns a novelty function into the watch’s primary interaction.
The watch also includes dual time, a 1/100-second stopwatch, an alarm, hourly signal and full auto-calendar. These are useful traditional digital-watch functions, not connected features. There are no modern smartwatch services, app notifications or sensors.
Rank #3
- 8-Digit Calculator, Constants for addition, subtraction, multiplication and division
- Water Resistant (hand washing or splashes of water only, not suitable for swimming, diving or submerging in water)
- Dual Time, Daily Alarm, Hourly Time Signal, Auto Calendar
- Battery CR2016, Approx. battery life: 5 years
- Size of case/total weight 42. 0 x 33. 0 x 8. 40mm / 29g
Which CA-500 color should you choose?
| Version or finish | Display | Best for | Trade-off |
|---|---|---|---|
| CA-500WE-1A (silver) | Positive display | Everyday legibility and understated retro style | Less visually dramatic than gold |
| CA-500WEG-1A (gold) | Positive display | Maximum 1970s/1980s nostalgia | Higher launch price and a louder finish |
| CA-500WEGG-1B (gunmetal) | Negative display | Dark, modernized retro styling | Negative display can be harder to read in poor light |
Silver: the safest all-rounder
The silver model pairs the metal case and bracelet with a positive display, so the digits are easier to read at a glance. Choose it if the calculator function is more than a novelty or if you want the least attention-grabbing color.
Gold: the strongest nostalgia play
Gold makes the CA-500 look most like a period gadget and emphasizes its playful character. Its positive display preserves practical legibility, but the finish is more conspicuous and was priced above silver at launch.
Rank #4
- Spectacular product from the brand CASIO, model CA-53WF-2B.
- Box material/colour: Resin/Blue
- Strap material/colour: Resin/Blue
- Case diameter: 34 mm
Gunmetal: stylish, but check the lighting
Gunmetal has the most restrained, contemporary appearance. Its negative display reverses the usual light background and dark digits; that can look sharp, but readability suffers in dim conditions compared with the positive-display versions. Buy it for the finish, not because it is the easiest variant to read.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.CA-500 versus CA-53W
The CA-53W remains the value reference point for Casio calculator watches. The CA-500 keeps the same basic idea but adds a metal construction and a bracelet, creating a more substantial visual object.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minute| Comparison point | CA-500 | CA-53W |
|---|---|---|
| Construction | Metal case with stainless-steel tapering bracelet | Resin construction |
| Calculator | Eight-digit calculator | Calculator watch format |
| Positioning | Premium, collectible retro gadget | Lower-cost, utilitarian classic |
| Reference launch pricing | €69.90 silver; €89.90 gold or gunmetal (Fratello Watches, 2023) | €49.90 (Fratello Watches, 2023) |
| Current listed example | CA500WEG-1AVT listed at $110 on Casio USA (accessed 2026) | Not stated in the cited sources |
The choice is therefore less about calculator capability than about material, finish and nostalgia. Pick the CA-53W if you want the least expensive way into the format. Pay the CA-500 premium if the metal case, bracelet and retro object quality are what attract you.
What to know before buying
- Prioritize display legibility. Silver and gold use positive displays; gunmetal’s negative display may be less readable in poor light.
- Treat water resistance conservatively. Casio calls the watch water resistant, but the supplied specification does not establish swimming or diving suitability.
- Plan for battery maintenance. Casio estimates approximately five years from a CR2016 cell. Actual life varies, so a battery replacement is normal ownership maintenance rather than a defect.
- Check local pricing and stock. Launch prices and the $110 US listing are reference figures, not universal or permanent prices. Regional availability, warranty terms and retailer pricing can change.
- Set bracelet expectations. The bracelet is comfortable and easy to adjust, but its light construction should not be confused with a premium solid-metal bracelet.
Who should buy the Casio CA-500?
Buy it if you want
- A wearable retro gadget with a real, usable keypad.
- Metal construction and bracelet styling rather than resin utility.
- A conversation-starting watch connected to Casio’s CQ-1, C-80 and CA-53W history.
- A simple digital watch with dual time, stopwatch, alarm, hourly signal and auto-calendar.
Choose the CA-53W instead if you want
- The lowest-cost route to a Casio calculator watch.
- A lighter, less precious resin watch for everyday knocks.
- The classic CA-53W look rather than the CA-500’s metal reinterpretation.
Bottom line
The Casio CA-500 succeeds as a small, playful retro object first and a practical calculator second. Its dimensions and weight make it easy to wear, the keypad genuinely works, and the metal case gives the familiar calculator-watch idea a more collectible presence. Silver is the best default for readability, gold is the purest nostalgia choice, and gunmetal is for buyers willing to accept a less legible negative display. Against the CA-53W, the extra cost buys finish and feel—not modern functionality.
Quick Recap
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