Breitling Navitimer B19 Chronograph 43 Perpetual Calendar

Breitling's Navitimer B19 Chronograph 43 Perpetual Calendar, reference PB1921251B1P1, is a chronograph with a 43 mm case in steel and platinum. The case measures 14.94 mm thick, and the grey dial sits under a cambered sapphire crystal treated on both sides. The self-winding B19 calibre drives the watch and stores 96 hours of power reserve. Beyond chronograph timing, the movement carries a perpetual calendar with day, date, month and moon phase, all coordinated automatically. A sapphire display back on the screwed-in caseback shows the mechanism. The grey dial pairs with a brown alligator leather strap on a steel folding clasp. That clasp closes on a case built to withstand 30 metres of water.