Bulova Classic Automatic 98A139 vs Citizen Promaster Air Nighthawk
Bulova's timepiece meets Citizen's diver
Quick Verdict
The Bulova Classic Automatic 98A139 ($250–$500) and Citizen Promaster Air Nighthawk ($250–$500) are closely matched timepieces at similar price points. The Classic Automatic 98A139 emphasizes Self-Winding Automatic engineering while the Promaster Air Nighthawk focuses on Citizen (Japan) craftsmanship.
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Specifications Compared
| Feature | Bulova Classic Automatic 98A139 | Citizen Promaster Air Nighthawk |
|---|---|---|
| Price | $250–$500 | $250–$500 |
| Case Size | 45mm | 42mm |
| Movement | Automatic, 21 Jewels | Eco-Drive Caliber B877 |
| Caliber Type | Self-Winding Automatic | Eco-Drive Solar Quartz (No Battery Change) |
| Power Reserve | — | 6 Months (Solar, Full Charge) |
| Water Resistance | 30m (3 ATM) | 200m (20 ATM) |
| Crystal | Domed Crystal | Mineral Glass |
| Case Material | Black Ion-Plated Stainless Steel | Stainless Steel |
| Origin | Japanese Movement | Citizen (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Bulova's design language vs Citizen's approach
The Bulova Classic Automatic 98A139 features a Black Ion-Plated Stainless Steel case at 45mm with Domed Crystal protection. The Citizen Promaster Air Nighthawk offers Stainless Steel construction at 42mm with Mineral Glass. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic, 21 Jewels vs Eco-Drive Caliber B877
The Classic Automatic 98A139 runs the Automatic, 21 Jewels (Self-Winding Automatic, standard power reserve) at standard frequency. The Promaster Air Nighthawk uses the Eco-Drive Caliber B877 (Eco-Drive Solar Quartz (No Battery Change), 6 Months (Solar, Full Charge) reserve) at standard. The Promaster Air Nighthawk offers a longer power reserve.
Wearability & Fit
45mm vs 42mm — different wrist presence
At 45mm, the Classic Automatic 98A139 has a bolder wrist presence compared to the Promaster Air Nighthawk at 42mm. 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 Citizen Promaster Air Nighthawk 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 6 Months (Solar, Full Charge) on the Promaster Air Nighthawk. 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 Promaster Air Nighthawk handles 200m (20 ATM). The Promaster Air Nighthawk 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 AmazonCitizen
Promaster Air Nighthawk
Choose the Citizen Promaster Air Nighthawk if you value Eco-Drive Solar Quartz (No Battery Change) technology, Citizen (Japan) heritage, and 42mm proportions. At $250–$500, the Eco-Drive Caliber B877 with 6 Months (Solar, Full Charge) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Bulova Classic Automatic 98A139 and Citizen Promaster Air Nighthawk represent two distinct approaches to fine watchmaking — the Bulova bringing Japanese Movement tradition while Citizen delivers Citizen (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.