Omega Speedmaster Day-Date Triple Calendar | 39mm Blue Dial | 3521.80 I Card I

The Omega Speedmaster Ref. 3521.80 is one of the most attractive neo-vintage Speedmaster Date models, combining the iconic Speedmaster chronograph look with a beautiful blue dial and full triple-calendar functionality. Housed in a comfortable 39mm stainless steel case, this reference offers a strong wrist presence while remaining easy to wear daily.

The blue dial is the highlight of this piece, giving the watch a rich and sporty appearance that stands out from the traditional black Speedmaster look. Alongside the chronograph, this reference features day, date, month, and 24-hour indications, making it one of the more functional and visually interesting Speedmaster variations from its era. This example also includes its original warranty card, adding extra appeal for collectors.

Condition

Please review the photos carefully for an accurate representation. Light scratches or signs of wear consistent with age and normal use may be present. The watch was serviced on June 22, 2026. The dial has a slight scratch on the bottom right side, which has been noted and should be reviewed in the photographs. The watch presents well overall with expected wear for its age and includes its original warranty card.

Technical Data

• Reference: 3521.80

• Case Diameter: 39mm

• Case Material: Stainless Steel

• Bezel: Stainless Steel Tachymeter Bezel

• Dial: Blue Dial with Triple Calendar Layout

• Crystal: Sapphire Crystal

• Water Resistance: Vintage watch; water resistance not guaranteed

• Bracelet: Stainless Steel Bracelet

• Movement: Omega Calibre 1151 Automatic Chronograph

• Power Reserve: Approximately 44 Hours

• Functions: Hours, Minutes, Small Seconds, Chronograph, Day, Date, Month, 24-Hour Indicator, Tachymeter

• Included: Original Warranty Card

• Service History: Serviced June 22, 2026