Omega Speedmaster Day-Date | Triple Calendar | 39mm Blue Dial | Ref 3523.80 I

About This Watch

The Omega Speedmaster Ref. 3523.80 is a distinctive and highly functional variation within the iconic Speedmaster collection, often referred to as the “Triple Calendar” or “Day-Date” Speedmaster. This model features a 39mm stainless steel case paired with a striking blue dial, offering a vibrant yet refined aesthetic that stands out while remaining versatile for everyday wear. The dial is thoughtfully arranged with day and month windows at 12 o’clock, a pointer date displayed along the outer track, and chronograph sub-dials, creating a dynamic and highly legible layout. Powered by the Omega Caliber 1151 automatic movement, based on the proven Valjoux 7751 architecture, the watch delivers reliable performance along with a wide range of complications. In addition to the chronograph function, it features a full triple calendar (day, date, and month) along with a 24-hour indicator, making it both practical and mechanically engaging. Finished with a tachymeter bezel and stainless steel bracelet, the Speedmaster 3523.80 combines the sporty heritage of the Speedmaster line with added functionality and a unique dial configuration, making it a compelling choice for collectors and enthusiasts seeking something beyond the traditional Moonwatch. 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 and do not affect the functionality of the watch. Technical Data Reference: 3523.80 Case diameter: 39 mm Case: Stainless steel Bezel: Fixed tachymeter bezel Dial color: Blue Crystal: Sapphire crystal Water resistance: 50 meters / 167 feet Bracelet: Stainless steel bracelet Movement: Omega Caliber 1151 automatic Power reserve: Approximately 42–44 hours Functions: Hours, minutes, seconds, chronograph, day, date, month, 24-hour indicator