
Omega
Constellation 39
Ref. 131.10.39.20.01.001
$5k–$6k
Pre-owned: $4k–$5k
Complete head-to-head comparison
Comparing the Omega Constellation 39 ($5k–$6k, 100m WR, 39mm) against the IWC Portofino 40 ($7k–$8k, 100m WR, 40mm). The Omega Constellation 39 is the more affordable option by $2k.

Omega
Ref. 131.10.39.20.01.001
$5k–$6k
Pre-owned: $4k–$5k

IWC
Ref. IW356504
$7k–$8k
Pre-owned: $5k–$7k
Price
Water Resistance
Score
Repurchase
Pros
Pros
Cons
Community Verdict
Too Close to Call
Both sit in a similar price range: Omega Constellation 39 at $5k–$6k vs IWC Portofino 40 at $7k–$8k — choose based on use case and style preference.
Both are excellent watches with different strengths. The Omega Constellation 39 offers a more compact size and costs less new. The IWC Portofino 40 excels in overall construction. The best choice depends on your wrist size, budget, and preferred aesthetic.
The Omega Constellation 39 retails for $5k–$6k, while the IWC Portofino 40 is priced at $7k–$8k. Pre-owned, expect $4k–$5k and $5k–$7k respectively. Actual secondary market prices vary based on condition and demand.
The Omega Constellation 39 has a 39mm case diameter with 11.5mm thickness, while the IWC Portofino 40 measures 40mm × 8.15mm. Both have lug-to-lug measurements of 46mm and 46mm respectively. Consider your wrist size and wear style when deciding.
The Omega Constellation 39 is water-resistant to 100m, while the IWC Portofino 40 offers 100m. 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 Omega Constellation 39 uses a automatic Cal. 8800 with 55 hours power reserve. The IWC Portofino 40 features a automatic Cal. 35111 with 42 hours power reserve. Both offer traditional mechanical craftsmanship.
Omega and IWC both command strong secondary markets. Pre-owned pricing shows an estimated resale value of $4k–$5k for the Constellation 39 and $5k–$7k for the Portofino 40. Condition, service history, and box/papers significantly impact resale value for both models.
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