Omega Speedmaster Calibro 321 Ref. 311.30.40.30.01.001

Omega Speedmaster Caliber 321

The iconic OMEGA Speedmaster, featured in all six lunar missions, is a legendary watch inspired by the famous Caliber 321, a milestone in the history of space exploration. The 39.7 mm stainless steel case recalls the design of the third generation worn during the first American spacewalk in 1965. The polished black ceramic bezel with a white enamel tachymeter scale adds a touch of elegance and durability. The black “step” dial, with traditional Moonwatch hands and vintage OMEGA logo, features subdials for small seconds, 30 minutes, and 12 hours, along with a central chronograph hand. The manual-winding Caliber 321 movement, visible through the sapphire crystal caseback, offers a power reserve of 55 hours. The scratch-resistant sapphire crystal with anti-reflective treatment protects the dial, while water resistance up to 5 bar (50 meters) makes it suitable for everyday wear. With a 19 mm lug width, 48 mm lug-to-lug length, 13.7 mm thickness, and weighing 128 grams, this model combines history, technology, and style in a single timepiece.