Omega Railmaster Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Black Alligator

Reference 2812.52.31

Omega Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Black Alligator

About this watch

The Omega Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph is a masterpiece of elegance and functionality combined. Its sleek design and robust features cater to both the adventurous spirit and the connoisseur's taste. The black alligator leather strap adds sophistication, while the stainless steel case exudes durability. The round shape and 42.20 mm diameter give it a commanding presence on the wrist. The dial shines with mixed indexes and arrow-shaped hands against a striking black background. The chronograph feature allows for precision timing, making it a joy to use. With a column wheel mechanism, this self-winding movement boasts a frequency of 28,800 vibrations per hour and a power reserve of 55 hours, ensuring accuracy and reliability. The 150m water resistance rating means it's built to handle any situation. This watch is not just a statement piece but also a companion that's perfect for both casual day outs and formal evening events.

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Key Features

Stainless Steel Case
Sapphire Crystal
Omega Caliber 3205 Movement
150m Water Resistance
Chronograph Function
Column Wheel Mechanism
Black Alligator Leather Strap

Specifications

Brand

Omega

Family

Railmaster

Model

Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Black Alligator

Reference

2812.52.31

Movement

3205

Movement Features

Hours, Minutes, Small Seconds
Chronograph, Column wheel

Case

Stainless Steel 42.2mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

150

Current Listings

2025 Omega Railmaster Black Dial w/Bracelet - Full Kit

Omega - 235.10.38.20.06.001 · $4,699

The new Railmaster 38-mm reference in black, featuring a Co-Axial Master Chronometer Calibre 8806 and dual-color lume.

Condition: Near-mint with insignificant hair-line scratches
Case Dimension: 38mm diameter
Lug To Lug: 45mm length
Lug Width: 19mm width

Posted at

Nov 5, 2025, 8:56 PM

Active

View listing on r/WatchExchange

2025 Omega Seamaster Railmaster 235.12.38.20.06.001

Omega - 235.12.38.20.06.001 · $4,500

A 2025 Omega Seamaster Railmaster in excellent condition, featuring a clean sapphire crystal and black dial, powered by an automatic Calibre 8806 Master Chronometer movement.

Condition: Excellent condition overall, minimal wear on stainless steel case
Case size: 38mm diameter
Movement type: Automatic

Posted at

Nov 5, 2025, 9:53 AM

Active

View listing on r/WatchExchange

Omega Seamaster Railmaster XXL 2806.52.37

Omega - 2806.52.37 · $2,799

A large watch suitable for the larger gentleman, featuring a modified Unitas movement and excellent lume.

Condition: Overall good condition, used strap
Case Size: 49.2mm diameter
Movement: Omega 2201, modified Unitas movement
Water Resistance: 150m depth rating

Posted at

Nov 4, 2025, 8:16 PM

Active

View listing on r/WatchExchange

2000s Omega Seamaster Aqua Terra Railmaster 36mm ref. 2504.52

Omega - 2504.52 · $5,700

A 2000s Omega Seamaster Aqua Terra Railmaster 36mm with a stainless steel case and black dial. The watch features an automatic movement, Super-LumiNova lume, and a sapphire crystal.

Condition: Normal wear in the form of a few hairlines, faint scratches, and tiny nicks throughout, some micro patina on hands
Case Material: Stainless steel
Diameter: 36 mm
Lug Width: 19 mm

Posted at

Nov 2, 2025, 4:51 PM

Active

View listing on r/WatchExchange