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Omega Seamaster 300 vs Omega Speedmaster Moonwatch Professional

Ref. 234.30.41.21.01.001 vs Ref. 310.32.42.50.04.001

The Omega Seamaster 300 and Omega Speedmaster Moonwatch Professional both carry the Omega name but serve different purposes — the Omega Seamaster 300 as a dive watch and the Omega Speedmaster Moonwatch Professional as a chronograph. At $6,400 and $6,600 respectively, the question isn't which is better — it's which better fits your collection and investment goals.

Price Comparison

Omega

Seamaster 300

Retail$6,400
Market Avg$5,120
Market Range$4,506 $5,734
Premium-20.0%
Flip Score2/10 – Below Average

Omega

Speedmaster Moonwatch Professional

Retail$6,600
Market Avg$5,610
Market Range$4,937 $6,283
Premium-15.0%
Flip Score2/10 – Below Average

At retail, the Omega Seamaster 300 is listed at $6,400 while the Omega Speedmaster Moonwatch Professional comes in at $6,600. The two watches are priced within $200 of each other, making this a near-even matchup in terms of cost. On the secondary market, the gap widens: the Omega Seamaster 300 trades around $5,120 and the Omega Speedmaster Moonwatch Professional around $5,610, a difference of $490 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 Speedmaster Moonwatch Professional commands an even stronger market premium of -15.0%, 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 Speedmaster Moonwatch Professional
Case Diameter41mm42mm
Case Thickness13.85mm13.18mm
Case MaterialStainless steelStainless steel
BezelBlack ceramic unidirectional rotating bezel with liquidmetal diving scaleAnodized aluminium bezel ring with tachymetre scale
CrystalDomed sapphire crystal with anti-reflective treatmentHesalite crystal
Water Resistance300m / 1000ft50m / 167ft
MovementOmega Co-Axial Master Chronometer calibre 8912Omega Co-Axial Master Chronometer calibre 3861
Movement TypeAutomaticManual-winding
Power Reserve55 hours50 hours
Bracelet/StrapStainless steel braceletGreen NATO strap
ClaspAdjustable claspSteel buckle
Lug Width20mm20mm

Key specification differences stand out between these two: The Omega Seamaster 300 leads in water resistance (300m / 1000ft vs. 50m / 167ft), and the Omega Seamaster 300 offers longer power reserve at 55 hours. With 7 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 $125 versus $134 for the Omega Speedmaster Moonwatch Professional. For water resistance, the Omega Seamaster 300 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 Speedmaster Moonwatch Professional if you prioritize better value retention, timing functionality.

Frequently Asked Questions

Which is more affordable, the Omega Seamaster 300 or the Omega Speedmaster Moonwatch Professional?

The Omega Seamaster 300 is more accessible, priced at $6,400 compared to $6,600.

Which holds its value better on the secondary market?

The Omega Speedmaster Moonwatch Professional currently trades at 15.0% below retail, indicating moderate value retention on the pre-owned market.

How do the Omega Seamaster 300 and Omega Speedmaster Moonwatch Professional compare in size?

The Omega Seamaster 300 measures 41mm in diameter and 13.85mm thick, while the Omega Speedmaster Moonwatch Professional is 42mm by 13.18mm. Water resistance differs too: 300m / 1000ft versus 50m / 167ft.

What movements do these watches use?

The Omega Seamaster 300 uses the Omega Co-Axial Master Chronometer calibre 8912 with 55 hours power reserve, while the Omega Speedmaster Moonwatch Professional runs on the Omega Co-Axial Master Chronometer calibre 3861 offering 50 hours of power reserve.

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