Updated
Casio Duro vs Invicta Pro Diver
The two cheapest serious divers, quartz against automatic
Quick Verdict
The Casio Duro MDV106 and the Invicta Pro Diver 8926OB are both rated to 200m and both sit in the $50–$100 band. The Duro is a 44mm quartz diver with a screw-down crown and caseback. The Invicta is a 40mm automatic running the Seiko-made NH35 with a 41-hour reserve and an exhibition caseback. Quartz and bigger, or automatic and smaller.
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Specifications Compared
| Feature | Casio Duro MDV-106B Blue | Invicta Pro Diver Automatic |
|---|---|---|
| Price | $50–$100 | $50–$100 |
| Case Size | 44mm | 40mm |
| Movement | Quartz Module 2784 | Automatic Seiko NH35 |
| Caliber Type | Casio Quartz (Battery) | Seiko NH35 Automatic (Hacking, Hand-Winding) |
| Power Reserve | 3-Year Battery | 41 Hours |
| Water Resistance | 200m (20 ATM) Diver | 200m (20 ATM) |
| Crystal | Mineral Glass | Mineral Glass |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Casio (Japan) | Japanese Movement (Seiko NH35) |
Category-by-Category Analysis
Design & Aesthetics
Tool diver against a classic diver homage
The Duro has its own sporty look with a bold bezel. The Invicta follows the classic steel diver template with a coin-edge unidirectional bezel. Which you prefer is taste; the Invicta reads as more traditional, the Duro as more of a tool.
Movement & Performance
Quartz against the Seiko NH35
The Duro runs Casio quartz Module 2784 with a battery rated at about three years. The Invicta runs the Seiko NH35, a 24-jewel automatic at 21,600 vph with a 41-hour reserve, hacking and hand-winding. The Duro will be more accurate; the Invicta is the one for people who want a mechanical watch.
Durability & Water Resistance
Same 200m rating, same mineral glass
Both are rated to 200m (20 ATM) and both use mineral glass. The Duro's specification lists a screw-down crown and caseback. The Invicta has an exhibition caseback so you can see the movement. On paper the water figures are the same.
Wearability & Fit
The Invicta is 4mm smaller
The Invicta is 40mm and the Duro is 44mm. For a wrist under about 7 inches, the Invicta is the easier fit.
Value & Cost of Ownership
Same price band
Both sit in the $50–$100 band. The Duro costs a battery every few years. The Invicta needs no battery, but any mechanical watch will eventually want servicing if you keep it long enough. Price is not the deciding factor here; the movement type is.
Our Verdict
Casio
Duro MDV-106B Blue
Choose the Casio Duro if you want the simpler, more water-ready watch. Quartz means it keeps good time and only needs a battery every few years, and the screw-down crown and caseback are proper dive features.
Check Price on AmazonInvicta
Pro Diver Automatic
Choose the Invicta Pro Diver if you want an automatic movement for the same money. The NH35 hacks and hand-winds, you can watch it through the exhibition caseback, and the 40mm case fits more wrists than the 44mm Duro.
Check Price on AmazonThe Bottom Line
The Casio Duro MDV106 and the Invicta Pro Diver 8926OB are both 200m-rated dive watches in the $50 to $100 band; the Duro is a 44mm quartz with a screw-down crown and caseback, while the Invicta is a 40mm automatic powered by the Seiko NH35 with a 41-hour power reserve.
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.