Bulova Classic Automatic 98A139 vs Casio Duro MDV106
Bulova's timepiece meets Casio's diver
Quick Verdict
The Casio Duro MDV106 ($50–$100) delivers Casio Quartz (Battery) technology in the tier below the Bulova Classic Automatic 98A139 ($250–$500). The Duro MDV106 measures 44mm and is rated 200m (20 ATM) Diver. The Classic Automatic 98A139 justifies its premium with Japanese Movement heritage and Automatic, 21 Jewels. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Bulova Classic Automatic 98A139 | Casio Duro MDV106 |
|---|---|---|
| Price | $250–$500 | $50–$100 |
| Case Size | 45mm | 44mm |
| Movement | Automatic, 21 Jewels | Quartz Module 2784 |
| Caliber Type | Self-Winding Automatic | Casio Quartz (Battery) |
| Power Reserve | — | 3-Year Battery |
| Water Resistance | 30m (3 ATM) | 200m (20 ATM) Diver |
| Crystal | Domed Crystal | Mineral Glass |
| Case Material | Black Ion-Plated Stainless Steel | Stainless Steel |
| Origin | Japanese Movement | Casio (Japan) |
Category-by-Category Analysis
Design & Aesthetics
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 Duro MDV106 offers Stainless Steel construction at 44mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic, 21 Jewels vs Quartz Module 2784
The Classic Automatic 98A139 runs the Automatic, 21 Jewels (Self-Winding Automatic, standard power reserve) at standard frequency. The Duro MDV106 uses the Quartz Module 2784 (Casio Quartz (Battery), 3-Year Battery reserve) at standard. The Duro MDV106 offers a longer power reserve.
Wearability & Fit
45mm vs 44mm — different wrist presence
At 45mm, the Classic Automatic 98A139 has a bolder wrist presence compared to the Duro MDV106 at 44mm. Water resistance differs: 30m (3 ATM) vs 200m (20 ATM) Diver.
Value & Cost of Ownership
Casio sits in the lower tier
The Bulova Classic Automatic 98A139 sits at $250–$500 and the Casio Duro MDV106 at $50–$100. On the specs that outlast any price: the Classic Automatic 98A139 uses Domed Crystal with a standard reserve, against Mineral Glass and 3-Year Battery on the Duro MDV106. Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 200m (20 ATM) Diver
The Classic Automatic 98A139 is rated to 30m (3 ATM) while the Duro MDV106 handles 200m (20 ATM) Diver. The Duro MDV106 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.
Check Price on AmazonCasio
Duro MDV106
Choose the Casio Duro MDV106 if you value Casio Quartz (Battery) technology, Casio (Japan) heritage, and 44mm proportions. At $50–$100, the Quartz Module 2784 with 3-Year Battery power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Bulova Classic Automatic 98A139 and Casio Duro MDV106 represent two distinct approaches to fine watchmaking — the Bulova bringing Japanese Movement tradition while Casio delivers Casio (Japan) engineering.
Frequently Asked Questions
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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.