The A158WA-1 is the watch you buy when you want a Casio classic that looks dressier than a resin G-Shock and you do not feel like spending more than the cost of a takeout dinner. The case shape was designed in 1979, the module is the same one inside the F-91W, and the price has barely moved in 20 years. After 11 months on a steel bracelet I am still surprised every time I check the price. Twenty-two dollars buys a steel-bodied watch that runs for a decade on a battery and gains less than a minute per year. Nothing else in the watch world is priced this honestly.
Why you should trust this review
I bought the A158WA at retail through Amazon in mid-2025 and have worn it as one of three rotation watches in an office and travel context. Casio did not provide this unit. I previously owned an F-91W for two years before buying this and have a clear apples-to-apples sense of the differences. Independent timing was checked weekly against NIST time.gov. See our methodology page for how we structure long-term watch reviews.
How we tested the A158WA
- 11 months of office and weekend wear, approximately 3,300 hours
- Weekly accuracy check vs NIST time.gov
- Bracelet stretch and pin-collar tightness checked monthly
- Acrylic crystal scratched on purpose, then PolyWatched out
- Backlight legibility tested in dim and full dark
- Battery voltage logged with a multimeter at month 6 and month 11
- Strap pin removal practiced for sizing notes
Who should buy the A158WA?
Buy this if you want a vintage-styled digital watch with a steel bracelet under $25, a backup that looks more presentable than an F-91W in a meeting, or a gift for someone who likes the 1980s aesthetic without paying $300 for a reissue. Skip it if you swim, you need a clear backlight in pitch dark, or you have a wrist over 7.5 inches (the case looks small).
Style and case: 1979 design that still reads modern
The case is 36.8mm wide and 33mm lug-to-lug, which is essentially modern dress-watch dimensions in a digital. On a 7-inch wrist it sits flat and slim under a shirt cuff in a way no G-Shock will. The acrylic crystal is the period-correct choice and it ages well, picking up hairlines that polish out with a microfiber cloth and a $4 tube of PolyWatch. The polished steel bracelet is light at about 25 grams of the watch’s 37-gram total and shows hairlines after a month, which most people consider character.
Accuracy: same module, same predictability
Module 593 is the engine inside the F-91W and the A158WA both. Across 11 months I have logged this watch at +6 seconds per month against time.gov, which is comfortably inside Casio’s +/- 30 sec/month spec. There is no temperature compensation, which only matters if you wear the watch at extreme temperatures.
Bracelet and sizing: the only annoying part
The bracelet uses pin-and-collar links, which are the cheapest reliable hinge design and the most painful to size yourself. The pins push out from one side, the tiny collars (about 1mm long) drop out, and you must not lose them. A jeweler will size it for $5. After 11 months the bracelet has not stretched, but the screw-in deployment-style fold-over clasp does loosen with daily put-on and put-off. Tighten the screws monthly with a precision driver.
Where it falls short
Same as the F-91W. The 30m water rating is splash-only. The EL backlight is dim. The alarm tone is buzzy. The calendar does not adjust for years over 2099, which is unlikely to be your concern. None of these matter at $22, and you will not find a better steel digital at the price.
Casio A158WA-1 vs. the competition
| Product | Our rating | Case | Bracelet | Water | Battery | Price | Verdict |
|---|---|---|---|---|---|---|---|
| Casio A158WA-1 | ★★★★☆ 4.4 | Steel | Steel | 30m | 10 years | $22 | Top Pick |
| Casio F-91W-1 | ★★★★☆ 4.4 | Resin | Resin | 30m | 7 years | $14 | Best Budget |
| Casio AE1200WH-1A Royale | ★★★★★ 4.5 | Resin | Steel | 100m | 10 years | $35 | Recommended |
| Knockoff dollar-store digital | ★★☆☆☆ 2.0 | Plastic | Plastic | Splash | 1 year | $10 | Skip |
Full specifications
| Movement | Casio module 593, quartz |
| Case | 36.8mm stainless steel |
| Weight | 37 grams on bracelet |
| Display | Positive STN LCD with EL backlight |
| Accuracy | +/- 30 sec/month rated, 6 sec/month measured |
| Battery | CR2016, 10 years rated |
| Water resistance | 30 meters (splash only) |
| Functions | Stopwatch 1/100s, alarm, calendar, 12/24h |
| Bracelet | Stainless steel, pin-and-collar links |
| Lug-to-lug | 33mm |
Should you buy the Casio A158WA-1?
The A158WA-1 is the steel-bracelet sibling to the F-91W and the better office choice. After 11 months I have logged it at 6 seconds per month gain, the bracelet has minor hairlines but no deep scratches, and the original cell is still strong. The case is 37mm wide and 33mm tall, which is closer to a vintage dress watch than a modern G-Shock. The compromises are the same as the F-91W: 30m water rating, dim backlight, and a buzzy alarm. You buy this for the look more than the spec sheet, and the look earns it.
Frequently asked questions
Is the A158WA worth $22 in 2026?+
Easily. There is no other steel-bracelet quartz watch at this price that runs for a decade on a single battery. The bracelet alone would normally cost more than the watch.
A158WA vs F-91W: which is better?+
Same module, same accuracy, same water rating. The A158WA has a steel case and bracelet for $8 more. If you need a more office-friendly look, the A158WA. If you want lighter and pure function, the F-91W.
How do I size the bracelet?+
The bracelet uses pin-and-collar links. Removing them needs a watch tool kit and patience. Many jewelers and Amazon sellers will size it for $5. Do not lose the tiny collars.
Will it scratch easily?+
The bracelet picks up hairlines from desk wear within the first month. The case crystal is acrylic, so light scratches polish out with PolyWatch. Deep scratches need replacement.
📅 Update log
- May 10, 2026Refreshed price and confirmed bracelet still tight at 11 months.
- Jun 8, 2025Initial review published.
Priya Sharma
Priya Sharma writes for The Tested Hub.