
Tudor
Black Bay GMT
Ref. M79830RB
$4k–$5k
Pre-owned: $4k–$4k
Complete head-to-head comparison
Comparing the Tudor Black Bay GMT ($4k–$5k, 200m WR, 41mm) against the Breitling Superocean 42 ($4k–$5k, 300m WR, 42mm). The Breitling Superocean 42 is the more affordable option by $150.

Tudor
Ref. M79830RB
$4k–$5k
Pre-owned: $4k–$4k

Breitling
Ref. A17375E71C1S1
$4k–$5k
Pre-owned: $3k–$4k
Price
Water Resistance
Score
Repurchase
Pros
Pros
Community Verdict
Too Close to Call
Both sit in a similar price range: Tudor Black Bay GMT at $4k–$5k vs Breitling Superocean 42 at $4k–$5k — choose based on use case and style preference. Choose Breitling Superocean 42 (300m WR) for diving; Tudor Black Bay GMT (200m) suits everyday wear.
Both are excellent watches with different strengths. The Tudor Black Bay GMT offers a more compact size and costs more new. The Breitling Superocean 42 excels in water resistance. The best choice depends on your wrist size, budget, and preferred aesthetic.
The Tudor Black Bay GMT retails for $4k–$5k, while the Breitling Superocean 42 is priced at $4k–$5k. Pre-owned, expect $4k–$4k and $3k–$4k respectively. Actual secondary market prices vary based on condition and demand.
The Tudor Black Bay GMT has a 41mm case diameter with 14.6mm thickness, while the Breitling Superocean 42 measures 42mm × 12.35mm. Both have lug-to-lug measurements of 50mm and 49mm respectively. Consider your wrist size and wear style when deciding.
The Tudor Black Bay GMT is water-resistant to 200m, while the Breitling Superocean 42 offers 300m. Both are suitable for swimming and snorkeling at their respective depths. For professional diving, verify the rating exceeds 300m and includes a screw-down crown.
The Tudor Black Bay GMT uses a automatic MT5652 with 70 hours power reserve. The Breitling Superocean 42 features a automatic Breitling 17 with 38 hours power reserve. Both offer traditional mechanical craftsmanship.
Tudor and Breitling both command strong secondary markets. Pre-owned pricing shows an estimated resale value of $4k–$4k for the Black Bay GMT and $3k–$4k for the Superocean 42. Condition, service history, and box/papers significantly impact resale value for both models.
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