Tudor Black Bay GMT vs Longines Spirit Zulu Time

Both are GMT watches in the premium tier. In short: the Tudor Black Bay GMT takes more water (200m) — both are fine for swimming, but it has more margin if you dive. The Tudor Black Bay GMT is automatic, 200m water resistance, 41mm, sapphire crystal; the Longines Spirit Zulu Time is automatic, 100m 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	Tudor Black Bay GMT	Longines Spirit Zulu Time
Movement	Automatic	Automatic
Water resistance	200m	100m
Case size	41mm	42mm
Crystal	sapphire	sapphire
Style	GMT / travel	GMT / travel
Price tier	Premium	Premium

Which should you buy?

The Tudor Black Bay GMT takes more water (200m) — both are fine for swimming, but it has more margin if you dive
The Tudor Black Bay GMT wears 41mm vs the Longines Spirit Zulu Time's 42mm — choose by wrist size

Where to buy

Tudor Black Bay GMTSee price on AmazonCheck price

Longines Spirit Zulu TimeSee price on AmazonCheck price

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FAQ

What's the difference between the Tudor Black Bay GMT and the Longines Spirit Zulu Time?
Both are GMT watches in the premium tier. The Tudor Black Bay GMT is automatic, 200m water resistance, 41mm, sapphire crystal; the Longines Spirit Zulu Time is automatic, 100m water resistance, 42mm, sapphire crystal.

Which has better water resistance, the Tudor Black Bay GMT or the Longines Spirit Zulu Time?
The Tudor Black Bay GMT, rated 200m, versus 100m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Tudor Black Bay GMT or the Longines Spirit Zulu Time?
Both sit in the premium 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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