Breguet Marine Alarme Musicale 40mm | 5547BB/Y2/9ZUCase in 18k white gold. Case size : 40 mm. Case thickness : 13. 05 mm. Guilloche by the hands of the manufactory. Mechanical alarm clock with a fight. Caliber 519F 1 with automatic winding, 45 hour power reserve, and a balance frequency of 28,800 vibrations per hour. Blue alligator leather strap. Folding buckle in white gold. Water resistant at 100 meters 330 feet. Functions : hours, minutes, seconds, date, alarm. Material Case material: White gold