The Rolex Datejust 31, reference 278240-0001, is cased in 31 mm Oystersteel, with a bright black dial and a domed bezel, on an Oyster bracelet. It is powered by the automatic Calibre 2236 movement. Complications: Date display, Cyclops lens. Water-resistant to 100 m (330 ft). Maker: Rolex. Reference: 278240-0001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request. Case Size: 31 mm. Case Material: Oystersteel. Movement: Automatic — Calibre 2236. Dial: Bright black. Bezel: Domed bezel. Bracelet/Strap: Oyster. Complications: Date display; Cyclops lens. Clasp: Folding Oysterclasp. Water Resistance: 100 m (330 ft).