Omega Seamaster Aqua Terra 150M vs Rolex GMT-Master II
Ref. 220.20.41.21.06.001 vs Ref. M126710GRNR-0004
The Omega Seamaster Aqua Terra 150M (dive watch) and Rolex GMT-Master II (gmt / travel watch) represent different approaches to luxury watchmaking. While the Omega Seamaster Aqua Terra 150M is priced at $10,200 and the Rolex GMT-Master II at $12,350, both offer compelling value propositions. This comparison examines their specifications, market positioning, and investment potential side by side.
Price Comparison
Omega
Seamaster Aqua Terra 150M
Rolex
GMT-Master II
At retail, the Omega Seamaster Aqua Terra 150M is listed at $10,200 while the Rolex GMT-Master II comes in at $12,350. The Omega Seamaster Aqua Terra 150M saves you $2,150 (21% less), a meaningful difference for most buyers. On the secondary market, the gap widens: the Omega Seamaster Aqua Terra 150M trades around $8,160 and the Rolex GMT-Master II around $17,500, a difference of $9,340 favoring the Omega Seamaster Aqua Terra 150M. Available at 20% below retail and trending downward, this represents a buying opportunity for those comfortable with the current market position. The Rolex GMT-Master II commands an even stronger market premium of +41.7%, with upward momentum. For investors, the Rolex GMT-Master II edges ahead with a flip potential score of 7/10 compared to 2/10.
Specifications
| Specification | Omega Seamaster Aqua Terra 150M | Rolex GMT-Master II |
|---|---|---|
| Case Diameter | 41mm | 40mm |
| Case Thickness | 13.2mm | 13.1mm |
| Case Material | Stainless steel and 18K Sedna gold | Oystersteel |
| Bezel | Sedna gold bezel | Cerachrom (ceramic) in green and black |
| Crystal | Domed sapphire crystal with anti-reflective treatment | Sapphire with Cyclops lens |
| Water Resistance | 150m / 500ft | 100m / 330ft |
| Movement | Omega Co-Axial Master Chronometer calibre 8900 | Rolex calibre 3285 |
| Movement Type | Automatic | Automatic |
| Power Reserve | 55 hours | 70 hours |
| Bracelet/Strap | Stainless steel and Sedna gold bracelet | Jubilee, five-piece links |
| Clasp | Folding clasp | Oysterclasp with Easylink 5mm comfort extension |
| Lug Width | 20mm | 20mm |
Key specification differences stand out between these two: The Omega Seamaster Aqua Terra 150M leads in water resistance (150m / 500ft vs. 100m / 330ft), and the Rolex GMT-Master II offers longer power reserve at 70 hours, and the Omega Seamaster Aqua Terra 150M uses Stainless steel and 18K Sedna gold while the Rolex GMT-Master II opts for Oystersteel. With 8 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 Aqua Terra 150M costs $199 versus $438 for the Rolex GMT-Master II. For water resistance, the Omega Seamaster Aqua Terra 150M delivers better value per meter of depth rating. The Omega Seamaster Aqua Terra 150M offers more power reserve per dollar spent.
Which Should You Buy?
Choose the Omega Seamaster Aqua Terra 150M if you value a lower entry price, serious diving capabilities. Go with the Rolex GMT-Master II if you prioritize stronger flip potential, better value retention. For pure investment potential, the Rolex GMT-Master II has the edge based on current market data.
Frequently Asked Questions
Which is more affordable, the Omega Seamaster Aqua Terra 150M or the Rolex GMT-Master II?
The Omega Seamaster Aqua Terra 150M is more accessible, priced at $10,200 compared to $12,350.
Which watch is a better investment?
Based on current market data, the Rolex GMT-Master II has a higher flip potential score of 7/10, suggesting stronger investment returns. However, watch values can fluctuate based on market conditions.
Which holds its value better on the secondary market?
The Rolex GMT-Master II currently trades at 41.7% above retail, indicating strong value retention on the pre-owned market.
How do the Omega Seamaster Aqua Terra 150M and Rolex GMT-Master II compare in size?
The Omega Seamaster Aqua Terra 150M measures 41mm in diameter and 13.2mm thick, while the Rolex GMT-Master II is 40mm by 13.1mm. Water resistance differs too: 150m / 500ft versus 100m / 330ft.
What movements do these watches use?
The Omega Seamaster Aqua Terra 150M uses the Omega Co-Axial Master Chronometer calibre 8900 with 55 hours power reserve, while the Rolex GMT-Master II runs on the Rolex calibre 3285 offering 70 hours of power reserve.