Casio Duro MDV106 (Marlin) vs Steinhart Ocean One

Both are dive watches. In short: the Steinhart Ocean One is mechanical (automatic) for the enthusiast feel and no battery; the Casio Duro MDV106 (Marlin) is quartz for accuracy and low maintenance. The Casio Duro MDV106 (Marlin) is quartz, 200m water resistance, 44mm, mineral crystal; the Steinhart Ocean One is automatic, 300m water resistance, 42mm, sapphire crystal.

Last verified 2026-06-27 · specs from manufacturer data · tier = price band, confirm the live price at the retailer

Spec	Casio Duro MDV106 (Marlin)	Steinhart Ocean One
Movement	Quartz	Automatic
Water resistance	200m	300m
Case size	44mm	42mm
Crystal	mineral	sapphire
Style	Dive	Dive
Price tier	Entry	Mid

Which should you buy?

The Steinhart Ocean One is mechanical (automatic) for the enthusiast feel and no battery; the Casio Duro MDV106 (Marlin) is quartz for accuracy and low maintenance
The Steinhart Ocean One takes more water (300m) — both are fine for swimming, but it has more margin if you dive
The Steinhart Ocean One has a sapphire crystal — more scratch-resistant for daily wear
The Casio Duro MDV106 (Marlin) sits in the lower price tier (Entry) if budget leads

Where to buy

Casio Duro MDV106 (Marlin)See price on AmazonCheck price

Steinhart Ocean OneSee price on AmazonCheck price

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FAQ

What's the difference between the Casio Duro MDV106 (Marlin) and the Steinhart Ocean One?
Both are dive watches. The Casio Duro MDV106 (Marlin) is quartz, 200m water resistance, 44mm, mineral crystal; the Steinhart Ocean One is automatic, 300m water resistance, 42mm, sapphire crystal.

Which has better water resistance, the Casio Duro MDV106 (Marlin) or the Steinhart Ocean One?
The Steinhart Ocean One, rated 300m, versus 200m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Casio Duro MDV106 (Marlin) or the Steinhart Ocean One?
The Casio Duro MDV106 (Marlin) is the lower-priced tier; the other steps up in build for more money — confirm both live prices at the retailer.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-27. Copy a ready-made reference:

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