18K Sedna gold screw-in crown
Calibre 2385 selfwinding movement with chronograph
8 mm platinum case set with 45 baguette-cut diamonds
The 41mm stainless steel case houses a Caliber 5 automatic movement system
calibre 537/1 self-winding movement
Rolex Yellow Gold Datejust 31 Watch - Fluted Bezel - Silver Diamond Six Dial - President Bracelet - 278278 sdr6p 6119R001 18K Sedna gold screw-in crown31mm 18K yellow gold case, screw down crown with twinlock double waterproofness system, fluted bezel, scratch resistant sapphire crystal with cyclops lens over the date, silver diamond Roman IV dial, Roman numerals with 11 diamonds set on VI, Rolex calibre 2236 automatic movement with center hour, minute and seconds hands, instantaneous date with rapid setting, and stop seconds for precise time setting, approximately 55 hours of power reserve, 18K