The Casio CA-500 is a calculator-watch series: its small keypad and LCD pair calculator functions with everyday digital timekeeping. Casio’s documented CA-500WE-1A offers an 8-digit calculator, dual time, stopwatch, alarm and calendar; heritage-color variants draw on the design of Casio’s 1976 CQ-1 clock-calculator. Because specifications can vary by suffix, check the exact model page before buying.
What is the Casio CA-500?
The CA-500 combines a calculator keypad and display with a digital watch. The CA-500WE-1A is one model with a detailed official specification listing; it should be treated as an example, not proof that every CA-500 variant has identical features.
For the WE-1A, Casio lists an 8-digit calculator, dual time, a 1/100-second stopwatch, daily alarm, hourly time signal, full auto-calendar through 2099, button-operation tone on/off, 12/24-hour format and regular timekeeping. Casio states accuracy of ±30 seconds per month. See Casio’s CA-500WE-1A specifications.
How do CA-500 models differ?
The official pages identify variants with different colors and styling, including the metallic CA-500WE-1A and heritage-color CA-500WE-4B, CA-500WEGG-9B and CA-500WE-7B. The pages do not establish a complete catalog or a side-by-side comparison of every CA-500 ever sold, so compare exact suffixes rather than assuming all specifications carry across the series.
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- 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
| Model | What the cited Casio page establishes |
|---|---|
| CA-500WE-1A | Metallic variant; detailed functions and specifications are listed on Casio’s product page. |
| CA-500WE-4B | Heritage-color design; Casio links its styling to the CQ-1. See the product page. |
| CA-500WEGG-9B | Heritage-color variant. See Casio’s product page. |
| CA-500WE-7B | Heritage-color variant. See Casio’s product page. |
For a specific purchase, verify the suffix and regional version, then check its own page for color and finish, dimensions, materials, band, battery and functions. Local price, stock, warranty and seller terms require a current listing check.
What is the CA-500’s connection to the CQ-1?
Casio says the heritage-color CA-500 designs pay homage to the CQ-1, a clock-calculator introduced in 1976. The CQ-1 combined a time display, alarm, stopwatch and calculator; Casio describes the CA-500 colors and dial details as references to that design. Casio’s CA-500WE-4B page calls the CQ-1 “This memorable product served as the launching pad for the development of subsequent Casio combined-function innovations.”
Rank #2
- Movement:Quartz
- Case Thickness (mm.):9 mm
- Case Width (mm.):34
- Clasp:Buckle
- Case Height (mm.):43
CA-500WE-1A dimensions, materials and battery
These figures are specific to the CA-500WE-1A, as listed by Casio:
- Size: 43.2 × 34.4 × 8.2 mm.
- Weight: 53 g.
- Case and bezel: resin with chrome plating; the glass is resin.
- Band: stainless steel with an adjustable clasp; listed compatible band size is 150–205 mm.
- Battery: CR2016, with approximately five years of battery life stated by Casio.
Casio labels the WE-1A “Water Resistant,” but the cited specifications give no numerical rating. That label alone does not establish suitability for swimming, diving or another particular water activity. The listed band-size range also does not confirm that a replacement strap will fit; the cited page gives no replacement-band part number or fitting instructions. Check the model page for its listed specifications.
Quick Recap
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
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
What to check before buying
- Confirm the complete suffix. Similar CA-500 names can refer to different finishes or variants. Match the listing to the exact Casio model page.
- Check the functions you need. The WE-1A’s 8-digit calculator and timekeeping features are documented; confirm the feature list on the page for any other suffix.
- Review fit and construction. Use the exact model’s dimensions, weight, band type and clasp information rather than extrapolating from the WE-1A.
- Verify battery and water information. Battery type and stated life may be model-specific. Do not infer a numeric water rating or activity recommendation where the listing does not provide one.
- Check seller terms locally. Price, availability, warranty and returns depend on region and seller; the cited Casio pages do not establish current retailer stock or pricing.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
