Steinhart Ocean One vs Seiko SKX007

Both are dive watches in the mid tier. In short: 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 is automatic, 300m water resistance, 42mm, sapphire crystal; the Seiko SKX007 is automatic, 200m water resistance, 42mm, hardlex crystal.

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

Spec	Steinhart Ocean One	Seiko SKX007
Movement	Automatic	Automatic
Water resistance	300m	200m
Case size	42mm	42mm
Crystal	sapphire	hardlex
Style	Dive	Dive
Price tier	Mid	Mid

Which should you buy?

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

Where to buy

Steinhart Ocean OneSee price on AmazonCheck price

Seiko SKX007See price on AmazonCheck price

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FAQ

What's the difference between the Steinhart Ocean One and the Seiko SKX007?
Both are dive watches in the mid tier. The Steinhart Ocean One is automatic, 300m water resistance, 42mm, sapphire crystal; the Seiko SKX007 is automatic, 200m water resistance, 42mm, hardlex crystal.

Which has better water resistance, the Steinhart Ocean One or the Seiko SKX007?
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 Steinhart Ocean One or the Seiko SKX007?
Both sit in the mid tier, so it comes down to movement, water resistance and case size — see the spec table above.

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

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