Casio F-91W vs Bulova Lunar Pilot Chronograph
Casio's timepiece meets Bulova's chronograph
Quick Verdict
The Casio F-91W (Under $50) offers Casio Digital Quartz (Battery) precision in the tier below the Bulova Lunar Pilot Chronograph ($500–$1,000). The F-91W measures 35mm and is rated 30m (Splash Resistant). The Lunar Pilot Chronograph counters with Made in Japan (Citizen Group) craftsmanship and 50m (5 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Specifications Compared
| Feature | Casio F-91W | Bulova Lunar Pilot Chronograph |
|---|---|---|
| Price | Under $50 | $500–$1,000 |
| Case Size | 35mm | 45mm |
| Movement | Quartz Module 593 | High-Performance 262kHz Quartz |
| Caliber Type | Casio Digital Quartz (Battery) | High-Performance Quartz |
| Power Reserve | 7-Year Battery | N/A (Quartz) |
| Water Resistance | 30m (Splash Resistant) | 50m (5 ATM) |
| Crystal | Acrylic | Sapphire Crystal |
| Case Material | Resin | Stainless Steel |
| Origin | Casio (Japan) | Made in Japan (Citizen Group) |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Bulova's approach
The Casio F-91W features a Resin case at 35mm with Acrylic protection. The Bulova Lunar Pilot Chronograph offers Stainless Steel construction at 45mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz Module 593 vs High-Performance 262kHz Quartz
The F-91W runs the Quartz Module 593 (Casio Digital Quartz (Battery), 7-Year Battery power reserve) at standard frequency. The Lunar Pilot Chronograph uses the High-Performance 262kHz Quartz (High-Performance Quartz, N/A (Quartz) reserve) at 262,144 Hz (High-Frequency Quartz). The F-91W edges ahead on power reserve.
Wearability & Fit
35mm vs 45mm — different wrist presence
At 35mm, the F-91W wears more compactly on smaller wrists compared to the Lunar Pilot Chronograph at 45mm. Water resistance differs: 30m (Splash Resistant) vs 50m (5 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio F-91W sits at Under $50 and the Bulova Lunar Pilot Chronograph at $500–$1,000. On the specs that outlast any price: the F-91W uses Acrylic with 7-Year Battery, against Sapphire Crystal and N/A (Quartz) on the Lunar Pilot Chronograph. Service intervals are typically 5-7 years for both.
Water Resistance
30m (Splash Resistant) vs 50m (5 ATM)
The F-91W is rated to 30m (Splash Resistant) while the Lunar Pilot Chronograph handles 50m (5 ATM). The Lunar Pilot Chronograph offers superior water resistance.
Our Verdict
Casio
F-91W
Choose the Casio F-91W if you prioritize Casio Digital Quartz (Battery) engineering, Casio (Japan) craftsmanship, and 30m (Splash Resistant) water resistance. At Under $50, it delivers Quartz Module 593 with 7-Year Battery power reserve.
Check Price on AmazonBulova
Lunar Pilot Chronograph
Choose the Bulova Lunar Pilot Chronograph if you value High-Performance Quartz technology, Made in Japan (Citizen Group) heritage, and 45mm proportions. At $500–$1,000, the High-Performance 262kHz Quartz with N/A (Quartz) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio F-91W and Bulova Lunar Pilot Chronograph represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Bulova delivers Made in Japan (Citizen Group) 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.