Christopher Ward C63 Sealander GMT vs Rolex GMT-Master II

Both are GMT watches. In short: the Christopher Ward C63 Sealander GMT takes more water (150m) — 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 Rolex GMT-Master II is automatic, 100m water resistance, 40mm, 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	Rolex GMT-Master II
Movement	Automatic	Automatic
Water resistance	150m	100m
Case size	39mm	40mm
Crystal	sapphire	sapphire
Style	GMT / travel	GMT / travel
Price tier	Upper	Premium

Which should you buy?

The Christopher Ward C63 Sealander GMT takes more water (150m) — both are fine for swimming, but it has more margin if you dive
The Christopher Ward C63 Sealander GMT sits in the lower price tier (Upper) if budget leads

Where to buy

Christopher Ward C63 Sealander GMTSee price on AmazonCheck price

Rolex GMT-Master IISee price on AmazonCheck price

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FAQ

What's the difference between the Christopher Ward C63 Sealander GMT and the Rolex GMT-Master II?
Both are GMT watches. The Christopher Ward C63 Sealander GMT is automatic, 150m water resistance, 39mm, sapphire crystal; the Rolex GMT-Master II is automatic, 100m water resistance, 40mm, sapphire crystal.

Which has better water resistance, the Christopher Ward C63 Sealander GMT or the Rolex GMT-Master II?
The Christopher Ward C63 Sealander GMT, rated 150m, versus 100m 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 Rolex GMT-Master II?
The Christopher Ward C63 Sealander 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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