Rolex Datejust 78240

Rolex Datejust 31mm Steel

The Rolex Datejust 31 Ref. 78240 is a 31mm automatic wristwatch in 904L Oystersteel with a smooth polished bezel — representing the intermediate case size that bridges the 26mm Lady-Datejust and the 36mm full Datejust. The 78240 is a discontinued reference produced from the late 1990s through the early 2000s, now sought as a vintage-adjacent steel Datejust in the 31mm format before Rolex standardised and refreshed the 31mm line. The all-steel smooth bezel configuration positions this reference as a clean, sport-dress hybrid — substantial enough to wear on either male or female wrists, versatile in context, and unostentatious in its material choice. The screw-down Twinlock crown and solid case back deliver 100 metres of water resistance. The blue Roman numeral dial presents twelve applied hour indices in a classic layout with a date aperture at 3 o'clock, magnified by the Cyclops lens. The blue ground creates a cool, formal tone suited to a wide range of wearing contexts, while the Roman numerals add a traditional horological character. Applied gold hands complete the dial. The smooth stainless steel bezel and all-steel Oyster bracelet reinforce the unfussy, versatile character of this watch. Caliber 2135 powers this Datejust 31 — a manufacture Rolex automatic movement with quickset date and COSC Superlative Chronometer certification, providing a power reserve of approximately 42 hours. The Oyster bracelet in stainless steel closes via a folding Oysterclasp. The solid screw-down case back maintains the Oyster case's integrity. Buy this preowned Rolex Datejust 31 Ref. 78240 31mm Steel Blue Roman Dial Oyster Bracelet on Master Luxury with box and papers at exclusive price.