
Longines
HydroConquest 41
Ref. L3.781.4.96.6
$1k–$2k
Pre-owned: $900–$1k
Classic diver DNA across price tiers
Featured ComparisonComparing the Longines HydroConquest 41 ($1k–$2k, 300m WR, 41mm) against the Tudor Pelagos 39 ($4k–$5k, 500m WR, 39mm). The Longines HydroConquest 41 is the more affordable option by $3k.

Longines
Ref. L3.781.4.96.6
$1k–$2k
Pre-owned: $900–$1k

Tudor
Ref. M25407N
$4k–$5k
Pre-owned: $4k–$4k
Price
Water Resistance
Score
Repurchase
Pros
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Community Verdict
Too Close to Call
Longines HydroConquest 41 is the value winner at $1k–$2k — over 50% cheaper than the Tudor Pelagos 39 ($4k–$5k). Choose Tudor Pelagos 39 (500m WR) for diving; Longines HydroConquest 41 (300m) suits everyday wear. Case size: Longines HydroConquest 41 at 41mm suits larger wrists; Tudor Pelagos 39 at 39mm is the more compact option.
Both are excellent watches with different strengths. The Longines HydroConquest 41 offers a larger case and costs less new. The Tudor Pelagos 39 excels in water resistance. The best choice depends on your wrist size, budget, and preferred aesthetic.
The Longines HydroConquest 41 retails for $1k–$2k, while the Tudor Pelagos 39 is priced at $4k–$5k. Pre-owned, expect $900–$1k and $4k–$4k respectively. Actual secondary market prices vary based on condition and demand.
The Longines HydroConquest 41 has a 41mm case diameter with 12mm thickness, while the Tudor Pelagos 39 measures 39mm × 12mm. Both have lug-to-lug measurements of 49mm and 46mm respectively. Consider your wrist size and wear style when deciding.
The Longines HydroConquest 41 is water-resistant to 300m, while the Tudor Pelagos 39 offers 500m. 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 Longines HydroConquest 41 uses a automatic L888.4 with 72 hours power reserve. The Tudor Pelagos 39 features a automatic MT5602 with 70 hours power reserve. Both offer traditional mechanical craftsmanship.
Longines and Tudor both command strong secondary markets. Pre-owned pricing shows an estimated resale value of $900–$1k for the HydroConquest 41 and $4k–$4k for the Pelagos 39. Condition, service history, and box/papers significantly impact resale value for both models.
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