Omega Omega Seamaster Planet Ocean 600MvsTudor Black Bay 58Which Is Better in 2026?

Both are excellent watches with different strengths. The Omega Omega Seamaster Planet Ocean 600M offers a larger case and costs more new. The Tudor Black Bay 58 excels in overall construction. The best choice depends on your wrist size, budget, and preferred aesthetic.

The Omega Omega Seamaster Planet Ocean 600M retails for $5.8k–$7.2k, while the Tudor Black Bay 58 is priced at $3.6k–$3.9k. Pre-owned, expect $4.5k–$6k and $3k–$3.8k respectively. Actual secondary market prices vary based on condition and demand.

The Omega Omega Seamaster Planet Ocean 600M has a 43.5mm case diameter with 13.95mm thickness, while the Tudor Black Bay 58 measures 39mm × 11.9mm. Both have lug-to-lug measurements of 53mm and 47mm respectively. Consider your wrist size and wear style when deciding.

The Omega Omega Seamaster Planet Ocean 600M is water-resistant to 600m, while the Tudor Black Bay 58 offers 200m. 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 Omega Seamaster Planet Ocean 600M uses a automatic Cal. 8900 with 60 hours power reserve. The Tudor Black Bay 58 features a automatic MT5402 with 70 hours power reserve. Both offer traditional mechanical craftsmanship.

Omega and Tudor both command strong secondary markets. Pre-owned pricing shows an estimated resale value of $4.5k–$6k for the Omega Seamaster Planet Ocean 600M and $3k–$3.8k for the Black Bay 58. Condition, service history, and box/papers significantly impact resale value for both models.