Christopher Ward C63 Sealander GMT vs San Martin SN0123 GMT

Both are GMT watches. In short: the San Martin SN0123 GMT takes more water (200m) — both are fine for swimming, but it has more margin if you dive. The Christopher Ward C63 Sealander GMT is automatic, 150m water resistance, 39mm, sapphire crystal; the San Martin SN0123 GMT is automatic, 200m water resistance, 39mm, sapphire crystal.

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

Spec	Christopher Ward C63 Sealander GMT	San Martin SN0123 GMT
Movement	Automatic	Automatic
Water resistance	150m	200m
Case size	39mm	39mm
Crystal	sapphire	sapphire
Style	GMT / travel	GMT / travel
Price tier	Upper	Mid

Which should you buy?

The San Martin SN0123 GMT takes more water (200m) — both are fine for swimming, but it has more margin if you dive
The San Martin SN0123 GMT sits in the lower price tier (Mid) if budget leads

Where to buy

Christopher Ward C63 Sealander GMTSee price on AmazonCheck price

San Martin SN0123 GMTSee price on AmazonCheck price

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FAQ

What's the difference between the Christopher Ward C63 Sealander GMT and the San Martin SN0123 GMT?
Both are GMT watches. The Christopher Ward C63 Sealander GMT is automatic, 150m water resistance, 39mm, sapphire crystal; the San Martin SN0123 GMT is automatic, 200m water resistance, 39mm, sapphire crystal.

Which has better water resistance, the Christopher Ward C63 Sealander GMT or the San Martin SN0123 GMT?
The San Martin SN0123 GMT, rated 200m, versus 150m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Christopher Ward C63 Sealander GMT or the San Martin SN0123 GMT?
The San Martin SN0123 GMT 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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