THE SAINT-IMIER | 41 mm | AutomaticSelf winding mechanical movement (Caliber L688. 2), column wheel chronograph, beating at 28,800 vibrations per hour, with a power reserve of approximately 54 hours. 41mm polished 18K rose gold round case. Case thickness: 14mm. Transparent case back with sapphire crystal. Water resistant up to 30 meters (3 ATM). Scratch resistant sapphire crystal with anti reflective coating. Silver dial with applied stick hour markers and rose gold tone hands.