Casio Duro MDV106 vs Longines HydroConquest Automatic
Two divers compared — $50–$100 vs $1,500–$2,500
Quick Verdict
The Casio Duro MDV106 ($50–$100) offers Casio Quartz (Battery) precision in the tier below the Longines HydroConquest Automatic ($1,500–$2,500). The Duro MDV106 measures 44mm and is rated 200m (20 ATM) Diver. The HydroConquest Automatic counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional divers for their respective tiers.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Casio Duro MDV106 | Longines HydroConquest Automatic |
|---|---|---|
| Price | $50–$100 | $1,500–$2,500 |
| Case Size | 44mm | 41mm |
| Movement | Quartz Module 2784 | Automatic L888.5 |
| Caliber Type | Casio Quartz (Battery) | ETA-Based Automatic with Silicon Balance Spring |
| Power Reserve | 3-Year Battery | 72 Hours |
| Water Resistance | 200m (20 ATM) Diver | 300m (30 ATM) |
| Crystal | Mineral Glass | Sapphire with Anti-Reflective Coating |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Casio (Japan) | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Longines's approach
The Casio Duro MDV106 features a Stainless Steel case at 44mm with Mineral Glass 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
Quartz Module 2784 vs Automatic L888.5
The Duro MDV106 runs the Quartz Module 2784 (Casio Quartz (Battery), 3-Year Battery 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
44mm vs 41mm — different wrist presence
At 44mm, the Duro MDV106 has a bolder wrist presence compared to the HydroConquest Automatic at 41mm. Water resistance differs: 200m (20 ATM) Diver vs 300m (30 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio Duro MDV106 sits at $50–$100 and the Longines HydroConquest Automatic at $1,500–$2,500. On the specs that outlast any price: the Duro MDV106 uses Mineral Glass with 3-Year Battery, against Sapphire with Anti-Reflective Coating and 72 Hours on the HydroConquest Automatic. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) Diver vs 300m (30 ATM)
The Duro MDV106 is rated to 200m (20 ATM) Diver while the HydroConquest Automatic handles 300m (30 ATM). The HydroConquest Automatic offers superior water resistance.
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 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 Casio Duro MDV106 and Longines HydroConquest Automatic represent two distinct approaches to the diver category — the Casio bringing Casio (Japan) tradition while Longines delivers Swiss Made 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.