Head-to-Head Comparison

Updated September 5, 2026

Bulova Classic Automatic 98A139 vs Casio AE1200 World Time "Casio Royale"

Two timepieces compared — $250–$500 vs Under $50

Quick Verdict

The Casio AE1200 World Time "Casio Royale" (Under $50) delivers Casio Digital Quartz (Battery) technology in the tier below the Bulova Classic Automatic 98A139 ($250–$500). The AE1200 World Time "Casio Royale" measures 42.1mm and is rated 100m (10 ATM). The Classic Automatic 98A139 justifies its premium with Japanese Movement heritage and Automatic, 21 Jewels. Both represent excellent choices in the timepiece category.

BulovaClassic Automatic 98A139$250–$500 Check price View the dossier

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Bulova

Classic Automatic 98A139

$250–$500

Check Price Full Review

Casio

AE1200 World Time "Casio Royale"

Under $50

View the dossier Full Review

Specifications Compared

Feature	Bulova Classic Automatic 98A139	Casio AE1200 World Time "Casio Royale"
Price	$250–$500	Under $50
Case Size	45mm	42.1mm
Movement	Automatic, 21 Jewels	Quartz Module 3299
Caliber Type	Self-Winding Automatic	Casio Digital Quartz (Battery)
Power Reserve	—	10-Year Battery
Water Resistance	30m (3 ATM)	100m (10 ATM)
Crystal	Domed Crystal	Mineral Glass
Case Material	Black Ion-Plated Stainless Steel	Resin
Origin	Japanese Movement	Casio (Japan)

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Bulova's design language vs Casio's approach

The Bulova Classic Automatic 98A139 features a Black Ion-Plated Stainless Steel case at 45mm with Domed Crystal protection. The Casio AE1200 World Time "Casio Royale" offers Resin construction at 42.1mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.

⚙️

Movement & Performance

Edge: Casio

Automatic, 21 Jewels vs Quartz Module 3299

The Classic Automatic 98A139 runs the Automatic, 21 Jewels (Self-Winding Automatic, standard power reserve) at standard frequency. The AE1200 World Time "Casio Royale" uses the Quartz Module 3299 (Casio Digital Quartz (Battery), 10-Year Battery reserve) at standard. The AE1200 World Time "Casio Royale" offers a longer power reserve.

📏

Wearability & Fit

Edge: Casio

45mm vs 42.1mm — different wrist presence

At 45mm, the Classic Automatic 98A139 has a bolder wrist presence compared to the AE1200 World Time "Casio Royale" at 42.1mm. Water resistance differs: 30m (3 ATM) vs 100m (10 ATM).

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Value & Cost of Ownership

Edge: Casio

Casio sits in the lower tier

The Bulova Classic Automatic 98A139 sits at $250–$500 and the Casio AE1200 World Time "Casio Royale" at Under $50. On the specs that outlast any price: the Classic Automatic 98A139 uses Domed Crystal with a standard reserve, against Mineral Glass and 10-Year Battery on the AE1200 World Time "Casio Royale". Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Casio

30m (3 ATM) vs 100m (10 ATM)

The Classic Automatic 98A139 is rated to 30m (3 ATM) while the AE1200 World Time "Casio Royale" handles 100m (10 ATM). The AE1200 World Time "Casio Royale" offers superior water resistance.

Our Verdict

Bulova

Classic Automatic 98A139

Choose the Bulova Classic Automatic 98A139 if you prioritize Self-Winding Automatic engineering, Japanese Movement craftsmanship, and 30m (3 ATM) water resistance. At $250–$500, it delivers Automatic, 21 Jewels with solid power reserve.

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Casio

AE1200 World Time "Casio Royale"

Choose the Casio AE1200 World Time "Casio Royale" if you value Casio Digital Quartz (Battery) technology, Casio (Japan) heritage, and 42.1mm proportions. At Under $50, the Quartz Module 3299 with 10-Year Battery power reserve makes it a compelling choice.

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The Bottom Line

The Bulova Classic Automatic 98A139 and Casio AE1200 World Time "Casio Royale" represent two distinct approaches to the timepiece category — the Bulova bringing Japanese Movement tradition while Casio delivers Casio (Japan) engineering.

Frequently Asked Questions

The Bulova Classic Automatic 98A139 is the better buy if you want a mechanical movement; the Casio AE1200 World Time "Casio Royale" is the better buy if you want quartz accuracy with no servicing. For water, the Casio AE1200 World Time "Casio Royale" is rated 100 m against 30 m, which is the difference between swimming and diving on one side and splashes on the other. On price, the Casio AE1200 World Time "Casio Royale" sits a band lower (Under $50 against $250–$500), so it is the cheaper way into the category. Neither is better at everything; the spec table above shows movement, case size, water resistance and crystal side by side so you can weigh what matters to you. We do not test units, so this is the makers' data, not a bench result.

The Casio AE1200 World Time "Casio Royale" offers better upfront value, sitting a tier lower at Under $50. However, the Bulova Classic Automatic 98A139 may justify its premium with superior finishing, heritage, or resale value.

Both are suitable for daily wear. The Classic Automatic 98A139 at 45mm with 30m (3 ATM) water resistance handles everyday situations. The AE1200 World Time "Casio Royale" at 42.1mm with 100m (10 ATM) is similarly capable. The Classic Automatic 98A139 uses Domed Crystal while the AE1200 World Time "Casio Royale" uses Mineral Glass.

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How This Page Was Made

Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.