Updated
Bulova Classic Automatic 98A139 vs Casio Pro Trek PRW3500T-7
Bulova's timepiece meets Casio's diver
Quick Verdict
The Bulova Classic Automatic 98A139 ($250–$500) and Casio Pro Trek PRW3500T-7 ($250–$500) are closely matched timepieces at similar price points. The Classic Automatic 98A139 emphasizes Self-Winding Automatic engineering while the Pro Trek PRW3500T-7 focuses on Casio (Japan) craftsmanship.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Bulova Classic Automatic 98A139 | Casio Pro Trek PRW3500T-7 |
|---|---|---|
| Price | $250–$500 | $250–$500 |
| Case Size | 45mm | 56.9 × 53.4 × 14.8mm |
| Movement | Automatic, 21 Jewels | Tough Solar (Solar Quartz), Radio-Controlled |
| Caliber Type | Self-Winding Automatic | Tough Solar Quartz, Multi-Band 6 |
| Power Reserve | — | Tough Solar (Rechargeable) |
| Water Resistance | 30m (3 ATM) | 200m (20 ATM) |
| Crystal | Domed Crystal | Mineral Glass |
| Case Material | Black Ion-Plated Stainless Steel | Resin / Stainless Steel, Titanium Bracelet |
| 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 Pro Trek PRW3500T-7 offers Resin / Stainless Steel, Titanium Bracelet construction at 56.9 × 53.4 × 14.8mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic, 21 Jewels vs Tough Solar (Solar Quartz), Radio-Controlled
The Classic Automatic 98A139 runs the Automatic, 21 Jewels (Self-Winding Automatic, standard power reserve) at standard frequency. The Pro Trek PRW3500T-7 uses the Tough Solar (Solar Quartz), Radio-Controlled (Tough Solar Quartz, Multi-Band 6, Tough Solar (Rechargeable) reserve) at standard. Power reserves are closely matched.
Wearability & Fit
45mm vs 56.9 × 53.4 × 14.8mm — different wrist presence
At 45mm, the Classic Automatic 98A139 wears more compactly on smaller wrists compared to the Pro Trek PRW3500T-7 at 56.9 × 53.4 × 14.8mm. Water resistance differs: 30m (3 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Same tier — different value propositions
The Bulova Classic Automatic 98A139 sits at $250–$500 and the Casio Pro Trek PRW3500T-7 at $250–$500. On the specs that outlast any price: the Classic Automatic 98A139 uses Domed Crystal with a standard reserve, against Mineral Glass and Tough Solar (Rechargeable) on the Pro Trek PRW3500T-7. Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 200m (20 ATM)
The Classic Automatic 98A139 is rated to 30m (3 ATM) while the Pro Trek PRW3500T-7 handles 200m (20 ATM). The Pro Trek PRW3500T-7 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
Pro Trek PRW3500T-7
Choose the Casio Pro Trek PRW3500T-7 if you value Tough Solar Quartz, Multi-Band 6 technology, Casio (Japan) heritage, and 56.9 × 53.4 × 14.8mm proportions. At $250–$500, the Tough Solar (Solar Quartz), Radio-Controlled with Tough Solar (Rechargeable) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Bulova Classic Automatic 98A139 and Casio Pro Trek PRW3500T-7 represent two distinct approaches to fine watchmaking — the Bulova bringing Japanese Movement tradition while Casio delivers Casio (Japan) engineering.
Frequently Asked Questions
More Comparisons
Explore These Watches
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.