Manual winding mechanical movement, Breguet Calibre 507 DRF Hand-Wind. Movement contains 40 jewels and has a power reserve of approximately 50 hours with a frequency of 21600 vph (beats per hour). Two sub-dials: one for dual time zone function at the 8 o'clock position, another displaying 24-hour time at the 9 o'clock position. Analog display features Roman numeral hour markers, minute markers around the outer bezel, and includes hour, minute, second, and am/pm indicators. Rose gold round case (size: 40 mm) with fixed rose gold bezel and transparent sapphire crystal back. Skeleton dial showing hand-wound mechanical movement components. Brown alligator leather strap fitted to a deployment clasp. Water resistant up to 100 feet / 30 meters.