Bulova Classic Automatic 98A139 vs Longines HydroConquest Automatic
Bulova's timepiece meets Longines's diver
Quick Verdict
The Bulova Classic Automatic 98A139 ($250–$500) offers Self-Winding Automatic precision in the tier below the Longines HydroConquest Automatic ($1,500–$2,500). The Classic Automatic 98A139 measures 45mm and is rated 30m (3 ATM). The HydroConquest Automatic counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Specifications Compared
| Feature | Bulova Classic Automatic 98A139 | Longines HydroConquest Automatic |
|---|---|---|
| Price | $250–$500 | $1,500–$2,500 |
| Case Size | 45mm | 41mm |
| Movement | Automatic, 21 Jewels | Automatic L888.5 |
| Caliber Type | Self-Winding Automatic | ETA-Based Automatic with Silicon Balance Spring |
| Power Reserve | — | 72 Hours |
| Water Resistance | 30m (3 ATM) | 300m (30 ATM) |
| Crystal | Domed Crystal | Sapphire with Anti-Reflective Coating |
| Case Material | Black Ion-Plated Stainless Steel | Stainless Steel |
| Origin | Japanese Movement | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Bulova's design language vs Longines's approach
The Bulova Classic Automatic 98A139 features a Black Ion-Plated Stainless Steel case at 45mm with Domed Crystal protection. The Longines HydroConquest Automatic offers Stainless Steel construction at 41mm with Sapphire with Anti-Reflective Coating. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic, 21 Jewels vs Automatic L888.5
The Classic Automatic 98A139 runs the Automatic, 21 Jewels (Self-Winding Automatic, standard power reserve) at standard frequency. The HydroConquest Automatic uses the Automatic L888.5 (ETA-Based Automatic with Silicon Balance Spring, 72 Hours reserve) at 25,200 vph (3.5 Hz). The HydroConquest Automatic offers a longer power reserve.
Wearability & Fit
45mm vs 41mm — different wrist presence
At 45mm, the Classic Automatic 98A139 has a bolder wrist presence compared to the HydroConquest Automatic at 41mm. Water resistance differs: 30m (3 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Bulova sits in the lower tier
The Bulova Classic Automatic 98A139 sits at $250–$500 and the Longines HydroConquest Automatic at $1,500–$2,500. On the specs that outlast any price: the Classic Automatic 98A139 uses Domed Crystal with a standard reserve, against Sapphire with Anti-Reflective Coating and 72 Hours on the HydroConquest Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 300m (30 ATM)
The Classic Automatic 98A139 is rated to 30m (3 ATM) while the HydroConquest Automatic handles 300m (30 ATM). The HydroConquest Automatic 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 AmazonLongines
HydroConquest Automatic
Choose the Longines HydroConquest Automatic if you value ETA-Based Automatic with Silicon Balance Spring technology, Swiss Made heritage, and 41mm proportions. At $1,500–$2,500, the Automatic L888.5 with 72 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Bulova Classic Automatic 98A139 and Longines HydroConquest Automatic represent two distinct approaches to fine watchmaking — the Bulova bringing Japanese Movement tradition while Longines delivers Swiss Made 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.