Omega Railmaster Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster Chronograph / Bracelet / China Explorer Yellow

Reference 2512.54.00

Omega Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster Chronograph / Bracelet / China Explorer Yellow

About this watch

When it comes to luxury watches, few names resonate as deeply as Omega. Today, we’re diving into the captivating world of the Omega Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster Chronograph, specifically the limited edition model 2512.54.00, also known as the China Explorer Yellow. This stunning piece is not just a timepiece; it's a statement. Crafted from high-quality stainless steel, the 2512.54.00 is built to last. It features a closed sapphire crystal back that not only protects the intricate movement but also signifies the meticulous craftsmanship that Omega is known for. At the core of this timepiece lies the impressive Omega caliber 3313. Diving deeper into the specifications, we find a column wheel chronograph with co-axial escapement. This is where the magic happens. Unlike traditional escapements, the co-axial escapement reduces friction, which in turn enhances the watch's precision and longevity. The black dial with mixed indexes provides an elegant and functional aesthetic. It boasts arrow hands, making it easy to read the time at a glance. The yellow accents add a unique flair, ensuring that this watch stands out in any collection. With a diameter of 42.20 mm and a lug width of 21.00 mm, this watch strikes a perfect balance. Whether you're at a formal event or out on an adventure, it fits right in. Notably, this watch has a power reserve of 52 hours, meaning you can take it off for the weekend and still have it ticking away come Monday morning! The Omega Seamaster Aqua Terra 150M isn’t just about looks; it packs a punch with its functionality as well.

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Key Features

Limited edition of only 351 units
Column wheel chronograph with co-axial escapement
Power reserve of 52 hours
Water resistance of 150 meters
High-quality stainless steel case
Closed sapphire crystal back
Black dial with mixed indexes and arrow hands

Specifications

Brand

Omega

Family

Railmaster

Model

Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster Chronograph / Bracelet / China Explorer Yellow

Reference

2512.54.00

Movement

3313

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph, Column wheel
Co-Axial Escapement

Case

Stainless Steel 42.2mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

150

Current Listings

Omega Seamaster Railmaster 40mm Ref. 220.12.40.20.03.001

Omega - 220.12.40.20.03.001 · $3,800

This Omega Seamaster Railmaster features a blue gradient dial and is certified as a Master Chronometer by METAS.

Condition: Excellent overall condition
Case size: 40mm diameter
Case material: Stainless steel
Dial color: Blue gradient

Posted at

Feb 15, 2026, 9:16 PM

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Omega Seamaster Railmaster XXL 49.2mm Watch Only

Omega - 2806.52.37 · $3,500

Omega Seamaster Railmaster XXL watch, purchased from Watchesmiles just over a month ago.

Condition: great condition
Case Size: 49.2mm diameter

Posted at

Feb 13, 2026, 7:12 PM

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Omega Seamaster Railmaster XXL 49.2mm

Omega - Railmaster XXL

This listing does not contain a description of the watch.

Size: 49.2mm diameter

Posted at

Feb 13, 2026, 2:56 PM

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Omega Seamaster Railmaster XXL 49.2mm

Omega - Railmaster XXL · $3,500

A large Omega Seamaster Railmaster model with a unique design, sold as is without original packaging or documentation.

Posted at

Feb 13, 2026, 2:55 PM

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[Price Reduced] Omega Railmaster Silver 220.10.40.20.06.001 2023 Full Set Like New under omega warranty till 2028 - $2999 + 🏷 🔥

Omega - 220.10.40.20.06.001 · $2,999

This is a discontinued Omega Railmaster model that's hard to find in this condition and still under warranty till 2028.

Condition: Like new
Warranty Expiration Date: 2028
Set Contents: Full set, half links, 3 Omega cards

Posted at

Feb 13, 2026, 12:39 PM

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Omega Railmaster 36mm 2804.52.37 | Original Omega certificates (serviced)

Omega - 2804.52.37 · $5,301

The Omega Railmaster is an iconic watch with a no nonsense 3-6-9 dial, making it practical and modest compared to the Rolex Explorer. Its design has remained relatively unchanged since 1957.

Condition: serviced
Diameter: 36mm
Certificates: original
Shipping Us: 52

Posted at

Feb 12, 2026, 9:08 AM

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Omega Railmaster - 220.10.40.20.03.001 - Blue - Steel - 40mm - Mint

Omega - 220.10.40.20.03.001 · $3,795

This Omega Railmaster is a pre-owned, mint condition watch with a blue dial and stainless steel case. It has a 40mm diameter and features an automatic movement.

Condition: Pre-Owned - Mint
Case Size: 40mm diameter
Bracelet Type: Stainless Steel
Movement Type: Automatic

Posted at

Mar 10, 2025, 12:58 AM

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NO TRADES: Omega '57 Trilogy Railmaster. $5030

Omega - '57 Trilogy Railmaster · $5,030

A brand new Omega '57 Trilogy Railmaster purchased in September 2024.

Condition: Light scratches
Bracelet condition: light scratches on bracelet and clasp
Warranty: USA only

Posted at

Mar 7, 2025, 1:00 PM

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