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.

Buy Now on Jomashop

This is an affiliate link

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 Railmaster 2503.52 (39.2mm) Full Set

Omega - 2503.52 · $3,150

39.2mm Railmaster with Cal. 2403 movement and 44HRs power reserve.

Condition: Great condition, no service history
Case Diameter: 39.2mm
Thickness: 11mm
Lug To Lug: 47mm

Posted at

Oct 24, 2025, 9:53 AM

Active

View listing on r/WatchExchange

Omega Railmaster 36mm 2804.52.37 | serviced (Original Box & Papers)

Omega - 2804.52.37 · $5,301

The Omega Railmaster is an iconic watch with a no-nonsense dial design that has remained largely unchanged since 1957.

Condition: recently serviced
Case size: 36mm
Dial type: 3-6-9

Posted at

Oct 23, 2025, 10:17 AM

Active

View listing on r/WatchExchange

Omega Seamaster Railmaster 40 mm, steel on steel - 2,599 USD

Omega - 220.10.40.20.06.001 · $2,599

A 40mm steel Omega Seamaster Railmaster, with a METAS-certified movement and 15 Bar water resistance.

Condition: Mint – Worn Twice
Case Size: 40mm diameter
Lug To Lug: 47mm
Thickness: 12.7mm

Posted at

Oct 21, 2025, 3:34 AM

Active

View listing on r/WatchExchange