Caliber: Calibre 1315Functions: Hours, link minutes, central seconds, dateDiameter: 42.3mmThickness: link 14.2mmPower Reserve: 120 hours (5 days)Winding: AutomaticFrequency: 4 HzJewels: 35Additional Details: Magnetic link resistance due to silicon hairspring automatic movement; sapphire bezel; 21.5mm lug width