Omega Seamaster Aqua Terra 150M | 36mm Black Dial | Quartz | Ref. 2518.50

The Omega Seamaster Aqua Terra Ref. 2518.50 is a clean and highly wearable first-generation Aqua Terra that combines the sportier DNA of the Seamaster line with a simple, refined everyday design. It features a 36.2mm stainless-steel case, smooth bezel, black dial, applied hour markers, luminous hands, and a date window at 3 o’clock. A domed scratch-resistant sapphire crystal with internal anti-reflective treatment protects the dial, while the compact proportions give the watch a classic, versatile feel on the wrist. Omega’s archived specifications confirm the 36.2mm case, black dial, sapphire crystal, quartz Calibre 1538, and 150-meter original water-resistance rating.

Powering the watch is the Omega Calibre 1538 quartz movement, featuring precise timekeeping, date functionality, an end-of-life battery indicator, and approximately 42 months of battery life. This particular example is fitted to a black leather strap with matching clasp; both the strap and clasp are aftermarket / non-Omega components.

Condition

Please review the photos carefully for an accurate representation. Light scratches, case wear, bezel wear, crystal wear, strap wear, clasp wear, or other signs of use consistent with age may be present and do not affect functionality. The watch presents well overall with expected wear for its age.

Please note that both the generic black leather strap and generic clasp fitted to this watch are not original Omega components.

Technical Data

• Reference: 2518.50 / 2518.50.00

• Model: Omega Seamaster Aqua Terra 150M

• Case Diameter: 36.2mm

• Case Material: Stainless Steel

• Bezel: Smooth Stainless-Steel Bezel

• Dial: Black Dial

• Hands & Markers: Luminous Hands & Applied Index Hour Markers

• Crystal: Domed Scratch-Resistant Sapphire Crystal with Internal Anti-Reflective Treatment

• Date: Date Window at 3 O’Clock

• Movement: Omega Calibre 1538

• Movement Type: Quartz

• Battery Life: Approximately 42 Months

• Battery Type: 371 / 1.55V

• Additional Movement Feature: End-of-Life Battery Indicator

• Strap: Black Leather Strap — Aftermarket / Non-Omega

• Clasp: Aftermarket / Non-Omega

• Water Resistance: Originally rated to 150 meters / 500 feet

• Functions: Hours, Minutes, Center Seconds & Date