Omega Railmaster Seamaster Aqua Terra 150M Co-Axial 36.2 Railmaster / Brown Alligator

Reference 2804.52.37

Omega Seamaster Aqua Terra 150M Co-Axial 36.2 Railmaster / Brown Alligator

About this watch

The Omega Railmaster 2804.52.37 is a luxury timepiece that embodies the spirit of adventure while remaining rooted in tradition. With its stainless steel case and sapphire crystal, this watch exudes elegance and sportiness, merging the best of both worlds. The black dial with mixed indexes and arrow hands adds a touch of sophistication, making it versatile for both casual outings and formal events. At the heart of this timepiece lies the Omega caliber 2403, an automatic movement that operates on a frequency of 25,200 vibrations per hour and boasts a power reserve of 48 hours. The Co-Axial escapement is a game-changer, enhancing precision while reducing friction, which means less maintenance over time. With its water resistance of 150 meters, it's ready for a dip in the pool or a day out on the boat. This watch is not just about telling time; it's an experience that combines functionality with style.
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Key Features

  • Stainless steel case
  • Sapphire crystal
  • Automatic movement (Omega caliber 2403)
  • Co-Axial escapement
  • Water resistance of 150 meters
  • Chronometer certification
  • Brown alligator strap

Specifications

Brand
Omega
Family
Railmaster
Model
Seamaster Aqua Terra 150M Co-Axial 36.2 Railmaster / Brown Alligator
Reference
2804.52.37
Movement
2403
Movement Features
  • Hours, Minutes, Seconds
  • Co-Axial Escapement, Chronometer
Case
Stainless Steel 36.2mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] Omega Seamaster Railmaster Grey Dial

Omega Seamaster Railmaster Grey Dial

Omega - 235.10.38.20.06.001 · $4,499
This Omega Railmaster has a 38mm steel case on a steel bracelet with a gray gradient dial, and includes a full set of accessories.

  • Condition: Excellent pre-owned condition
  • Case size: 38mm diameter
  • Bracelet material: steel
  • Dial color: gray gradient
Posted at
Apr 19, 2026, 4:38 PM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster 39mm 2503.52 for $2580 shipped!

Omega Railmaster 39mm 2503.52 for $2580 shipped!

Omega - 2503.52 · $2,580
The Omega Seamaster Railmaster 39mm delivers a simple design with its 3-6-9-12 markers and arrow indices, making it the ultimate everyday watch.

  • Condition: Satisfactory
  • Case Size: 39mm
  • Lug To Lug: 47mm
  • Movement Type: No Date Co-Axial Automatic
Posted at
Apr 19, 2026, 11:02 AM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster Denim Dial on Bracelet - Omega Travel Box & Extra Strap Included - $2475

Omega Railmaster Denim Dial on Bracelet - Omega Travel Box & Extra Strap Included - $2475

Omega - Railmaster Denim Dial · $2,475
A versatile Omega Railmaster Denim Dial on a bracelet with 150M water resistance and a 40mm case size that wears well. The watch is in good condition with minor signs of wear.

  • Condition: Used, minimal wear
  • Case diameter: 40mm
  • Water resistance: 150m
  • Bracelet size: 7-7.25 inch
Posted at
Apr 19, 2026, 8:55 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster 39mm - 2503.52- Price Reduced

Omega Seamaster Railmaster 39mm - 2503.52- Price Reduced

Omega - 2503.52 · $2,950
For sale is this amazing Omega Railmaster featuring a mechanical, self-winding movement with co-axial escapement and exhibition case back.

  • Condition: good, light wear on bezel, bracelet, and clasp
  • Movement: caliber 2403
  • Case diameter: 39mm
Posted at
Apr 18, 2026, 12:54 PM
Active
View listing on r/WatchExchange
[WTS] 2022 OMEGA Seamaster Railmaster 40mm - 220.10.40.20.01.001 - Full Set

2022 OMEGA Seamaster Railmaster 40mm - 220.10.40.20.01.001 - Full Set

Omega - 220.10.40.20.01.001 · $3,100
A classic design by Omega, the Seamaster Railmaster 40mm features a vertical 'satination' pattern crosshair dial with fantastic lume, and comes as a full set from 2022.

  • Condition: Excellent pre-owned condition with minor visible wear throughout
  • Case Size: 40mm diameter
  • Movement: Omega 8806
Posted at
Apr 14, 2026, 8:32 PM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster Grey Dial on Staib Mesh Bracelet & OEM Clasp on Rubber Strap

Omega Railmaster Grey Dial on Staib Mesh Bracelet & OEM Clasp on Rubber Strap

Omega - 22010402006001 · $2,625
This Omega Railmaster is a rugged, anti-magnetic watch designed for everyday use. It features a grey brushed dial and a high-quality Staib mesh bracelet.

  • Bracelet Size Range: up to 7.5 inches loose
  • Movement Type: co-axial master chronometer
Posted at
Apr 13, 2026, 5:35 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster 40mm[WTS]

Omega Seamaster Railmaster 40mm[WTS]

Omega - Railmaster · $3,300
A great first watch for any enthusiast, stainless steel brushed bracelet and bezel and case. No dent nor dings.

  • Condition: Great condition
  • Bracelet length: 40mm diameter
Posted at
Apr 12, 2026, 12:50 AM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster 235.10.38.20.06.001 - under warranty until 2031

Omega Railmaster 235.10.38.20.06.001 - under warranty until 2031

Omega - 235.10.38.20.06.001 · $4,499
This Omega Railmaster features a 38mm steel case on a steel bracelet with a gray gradient dial and has a warranty until 2031.

  • Condition: Excellent pre-owned condition
  • Case size: 38mm diameter
  • Bracelet material: steel
  • Dial color: gray gradient
Posted at
Apr 9, 2026, 9:54 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster 39mm - 2503.52

Omega Seamaster Railmaster 39mm - 2503.52

Omega - 2503.52 · $2,995
This Omega Railmaster features a mechanical, self-winding movement (caliber 2403) with co-axial escapement, 39mm case diameter, and exhibition case back.

  • Condition: good, has light wear on bezel, bracelet, and clasp
  • Movement: caliber 2403
  • Case diameter: 39mm
  • Bracelet size compatible: up to 7.5 inch wrist
Posted at
Apr 8, 2026, 6:45 PM
Active
View listing on r/WatchExchange