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Omega Seamaster 300 vs Omega Seamaster Planet Ocean Ultra Deep

Ref. 234.32.41.21.01.001 vs Ref. 215.30.46.21.01.001

Choosing between the Omega Seamaster 300 (Ref. 234.32.41.21.01.001) and the Omega Seamaster Planet Ocean Ultra Deep (Ref. 215.30.46.21.01.001) comes down to the details — both share the Seamaster DNA but differ in key specifications and market positioning. The Omega Seamaster 300 retails for $5,900 while the Omega Seamaster Planet Ocean Ultra Deep is $11,400. Let's examine which variant offers better value and investment potential.

Price Comparison

Omega

Seamaster 300

Retail$5,900
Market Avg$4,720
Market Range$4,154 $5,286
Premium-20.0%
Flip Score2/10 – Below Average

Omega

Seamaster Planet Ocean Ultra Deep

Retail$11,400
Market Avg$9,120
Market Range$8,026 $10,214
Premium-20.0%
Flip Score2/10 – Below Average

At retail, the Omega Seamaster 300 is listed at $5,900 while the Omega Seamaster Planet Ocean Ultra Deep comes in at $11,400. At $5,500 less (93% savings), the Omega Seamaster 300 offers a substantially lower entry point. On the secondary market, the gap narrows: the Omega Seamaster 300 trades around $4,720 and the Omega Seamaster Planet Ocean Ultra Deep around $9,120, a difference of $4,400 favoring the Omega Seamaster 300. Available at 20% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Omega Seamaster Planet Ocean Ultra Deep shows a more modest market premium of -20.0%, though currently trending downward. Both watches score equally on flip potential at 2/10, making neither a clear investment winner over the other.

Specifications

SpecificationOmega Seamaster 300Omega Seamaster Planet Ocean Ultra Deep
Case Diameter41mm45.5mm
Case Thickness13.85mm18.12mm
Case MaterialStainless steelStainless steel (O-MEGASTEEL)
BezelBlack ceramic unidirectional rotating bezel with liquidmetal diving scaleBlack ceramic unidirectional rotating bezel with liquidmetal diving scale
CrystalDomed sapphire crystal with anti-reflective treatmentSapphire crystal with anti-reflective treatment
Water Resistance300m / 1000ft6000m / 19685ft
MovementOmega Co-Axial Master Chronometer calibre 8912Omega Co-Axial Master Chronometer calibre 8912
Movement TypeAutomaticAutomatic
Power Reserve55 hours55 hours
Bracelet/StrapBlack and grey NATO strapStainless steel bracelet (O-MEGASTEEL)
ClaspSteel buckleFolding clasp with diver extension
Lug Width20mm22mm

Key specification differences stand out between these two: The Omega Seamaster Planet Ocean Ultra Deep leads in water resistance (6000m / 19685ft vs. 300m / 1000ft), and the Omega Seamaster 300 uses Stainless steel while the Omega Seamaster Planet Ocean Ultra Deep opts for Stainless steel (O-MEGASTEEL). With 6 notable spec differences in total, the choice depends on which features matter most to your use case.

Value Per Feature

Per millimeter of case diameter, the Omega Seamaster 300 costs $115 versus $200 for the Omega Seamaster Planet Ocean Ultra Deep. For water resistance, the Omega Seamaster Planet Ocean Ultra Deep delivers better value per meter of depth rating. The Omega Seamaster 300 offers more power reserve per dollar spent.

Which Should You Buy?

Choose the Omega Seamaster 300 if you value a lower entry price, serious diving capabilities. Go with the Omega Seamaster Planet Ocean Ultra Deep if you prioritize serious diving capabilities.

Frequently Asked Questions

Which is more affordable, the Omega Seamaster 300 or the Omega Seamaster Planet Ocean Ultra Deep?

The Omega Seamaster 300 is more accessible, priced at $5,900 compared to $11,400.

Which holds its value better on the secondary market?

The Omega Seamaster Planet Ocean Ultra Deep currently trades at 20.0% below retail, indicating moderate value retention on the pre-owned market.

How do the Omega Seamaster 300 and Omega Seamaster Planet Ocean Ultra Deep compare in size?

The Omega Seamaster 300 measures 41mm in diameter and 13.85mm thick, while the Omega Seamaster Planet Ocean Ultra Deep is 45.5mm by 18.12mm. Water resistance differs too: 300m / 1000ft versus 6000m / 19685ft.

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