Casio Duro MDV106 vs Citizen Promaster Air Nighthawk
Two divers compared — $50–$100 vs $250–$500
Quick Verdict
The Casio Duro MDV106 ($50–$100) offers Casio Quartz (Battery) precision in the tier below the Citizen Promaster Air Nighthawk ($250–$500). The Duro MDV106 measures 44mm and is rated 200m (20 ATM) Diver. The Promaster Air Nighthawk counters with Citizen (Japan) craftsmanship and 200m (20 ATM) water resistance. Both are exceptional divers for their respective tiers.
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Specifications Compared
| Feature | Casio Duro MDV106 | Citizen Promaster Air Nighthawk |
|---|---|---|
| Price | $50–$100 | $250–$500 |
| Case Size | 44mm | 42mm |
| Movement | Quartz Module 2784 | Eco-Drive Caliber B877 |
| Caliber Type | Casio Quartz (Battery) | Eco-Drive Solar Quartz (No Battery Change) |
| Power Reserve | 3-Year Battery | 6 Months (Solar, Full Charge) |
| Water Resistance | 200m (20 ATM) Diver | 200m (20 ATM) |
| Crystal | Mineral Glass | Mineral Glass |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Casio (Japan) | Citizen (Japan) |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Citizen's approach
The Casio Duro MDV106 features a Stainless Steel case at 44mm with Mineral Glass 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
Quartz Module 2784 vs Eco-Drive Caliber B877
The Duro MDV106 runs the Quartz Module 2784 (Casio Quartz (Battery), 3-Year Battery 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
44mm vs 42mm — different wrist presence
At 44mm, the Duro MDV106 has a bolder wrist presence compared to the Promaster Air Nighthawk at 42mm. Water resistance differs: 200m (20 ATM) Diver vs 200m (20 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio Duro MDV106 sits at $50–$100 and the Citizen Promaster Air Nighthawk at $250–$500. On the specs that outlast any price: the Duro MDV106 uses Mineral Glass with 3-Year Battery, 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
200m (20 ATM) Diver vs 200m (20 ATM)
The Duro MDV106 is rated to 200m (20 ATM) Diver while the Promaster Air Nighthawk handles 200m (20 ATM). Both offer identical water resistance ratings.
Our Verdict
Casio
Duro MDV106
Choose the Casio Duro MDV106 if you prioritize Casio Quartz (Battery) engineering, Casio (Japan) craftsmanship, and 200m (20 ATM) Diver water resistance. At $50–$100, it delivers Quartz Module 2784 with 3-Year Battery 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 Casio Duro MDV106 and Citizen Promaster Air Nighthawk represent two distinct approaches to the diver category — the Casio bringing Casio (Japan) tradition while Citizen delivers Citizen (Japan) engineering.
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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.