Omega Seamaster Diver 300M vs Rolex Datejust 31
Ref. 210.30.42.20.01.001 vs Ref. M278271-0006
Comparing the Omega Seamaster Diver 300M to the Rolex Datejust 31 means weighing a significant price difference — is the premium justified? At $5,700 versus $14,300, these two watches serve different segments of the market. Here's how they stack up on specifications, value retention, and investment potential.
Price Comparison
Omega
Seamaster Diver 300M
Rolex
Datejust 31
At retail, the Omega Seamaster Diver 300M is listed at $5,700 while the Rolex Datejust 31 comes in at $14,300. The Omega Seamaster Diver 300M comes in at $8,600 less — more than half the price difference — making it a significantly more accessible option. On the secondary market, the gap widens: the Omega Seamaster Diver 300M trades around $4,700 and the Rolex Datejust 31 around $13,585, a difference of $8,885 favoring the Omega Seamaster Diver 300M. Available at 18% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Rolex Datejust 31 commands an even stronger market premium of -5.0%, holding steady. For investors, the Rolex Datejust 31 edges ahead with a flip potential score of 4/10 compared to 2/10.
Specifications
| Specification | Omega Seamaster Diver 300M | Rolex Datejust 31 |
|---|---|---|
| Case Diameter | 42mm | 31mm |
| Case Thickness | 13.56mm | 11.3mm |
| Case Material | Stainless steel | Oystersteel and 18ct Everose gold |
| Bezel | Black ceramic unidirectional rotating bezel with diving scale | 18ct Everose gold, fluted |
| Crystal | Domed sapphire crystal with anti-reflective treatment | Sapphire with Cyclops lens |
| Water Resistance | 300m / 1000ft | 100m / 330ft |
| Movement | Omega Co-Axial Master Chronometer calibre 8800 | Rolex calibre 2236 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 55 hours | 55 hours |
| Bracelet/Strap | Stainless steel bracelet | Jubilee, five-piece links in Oystersteel and 18ct Everose gold |
| Clasp | Folding clasp with diver extension | Oysterclasp with Easylink 5mm comfort extension |
| Lug Width | 20mm | 16mm |
Key specification differences stand out between these two: The Omega Seamaster Diver 300M leads in water resistance (300m / 1000ft vs. 100m / 330ft), and the Omega Seamaster Diver 300M uses Stainless steel while the Rolex Datejust 31 opts for Oystersteel and 18ct Everose gold. 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 Diver 300M costs $112 versus $438 for the Rolex Datejust 31. For water resistance, the Omega Seamaster Diver 300M delivers better value per meter of depth rating. The Omega Seamaster Diver 300M offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Seamaster Diver 300M if you value a lower entry price, serious diving capabilities. Go with the Rolex Datejust 31 if you prioritize stronger flip potential, better value retention. For pure investment potential, the Rolex Datejust 31 has the edge based on current market data.
Frequently Asked Questions
Which is more affordable, the Omega Seamaster Diver 300M or the Rolex Datejust 31?
The Omega Seamaster Diver 300M is more accessible, priced at $5,700 compared to $14,300.
Which watch is a better investment?
Based on current market data, the Rolex Datejust 31 has a higher flip potential score of 4/10, suggesting stronger investment returns. However, watch values can fluctuate based on market conditions.
Which holds its value better on the secondary market?
The Rolex Datejust 31 currently trades at 5.0% below retail, indicating moderate value retention on the pre-owned market.
How do the Omega Seamaster Diver 300M and Rolex Datejust 31 compare in size?
The Omega Seamaster Diver 300M measures 42mm in diameter and 13.56mm thick, while the Rolex Datejust 31 is 31mm by 11.3mm. Water resistance differs too: 300m / 1000ft versus 100m / 330ft.
What movements do these watches use?
The Omega Seamaster Diver 300M uses the Omega Co-Axial Master Chronometer calibre 8800 with 55 hours power reserve, while the Rolex Datejust 31 runs on the Rolex calibre 2236 offering 55 hours of power reserve.