39 mm, 18 kt white gold, polished finish Reference 52509 Calibre 7140, manufacture Rolex Model case 39 mm, 18 kt white gold, polished finish Power reserve Approximately 70 hours Bezel Domed and fluted Bracelet Leather strap Water-resistance Waterproof to 50 metres / 165 feet Dial Intense white Movement Perpetual, mechanical, self-winding Certification Superlative Chronometer (official chronometer certification + Rolex certification after casing) Download brochure