Omega Speedmaster Professional Moonwatch | 1498/840 Bracelet | 42mm Black Dial |

The Omega Speedmaster Professional Ref. 3570.50 is one of the most iconic modern Moonwatch references, offering the classic Speedmaster design in its traditional manual-wind configuration. Housed in a 42mm stainless steel case, this reference features a black dial, black tachymeter bezel, Hesalite crystal, and solid caseback, giving it the true Moonwatch look collectors know and appreciate.

This example is fitted on a stainless steel bracelet with an older-style Omega clasp, giving the watch a slightly more vintage and classic wrist presence compared to later bracelet configurations. Powered by Omega’s Calibre 1861 manual-wind chronograph movement, the 3570.50 remains one of the most beloved Speedmaster references for its heritage, wearability, and timeless design.

Condition

Please review the photos carefully for an accurate representation. Light scratches, clasp wear, bracelet wear, or signs of use consistent with age may be present and do not affect functionality. The watch is fitted with an older-style Omega bracelet clasp, which adds to its classic Speedmaster character. The watch presents well overall with expected wear for its age.

Technical Data

• Reference: 3570.50

• Model: Speedmaster Professional Moonwatch

• Case Diameter: 42mm

• Case Material: Stainless Steel

• Bezel: Black Tachymeter Bezel

• Dial: Black Dial

• Crystal: Hesalite / Plexiglass Crystal

• Caseback: Solid Caseback

• Bracelet: Stainless Steel Bracelet with Older-Style Omega Clasp

• Movement: Omega Calibre 1861 Manual-Wind Chronograph

• Power Reserve: Approximately 48 Hours

• Functions: Hours, Minutes, Small Seconds, Chronograph, Tachymeter

• Water Resistance: Originally rated 50 meters; water resistance not guaranteed unless pressure tested