DESCRIPTION

The ultra-thin perpetual calendar is presented in a new black design with the 5139G-010. The 5139G-010 has a round 38mm white gold case with a hobnail bezel and an exhibition case back. It has a scratch-resistant sapphire crystal and a screw-down crown. It has a black lacquered dial with three sub-dials, silver-tone index hour markers, and silver-tone hands. The 5139G-010 is powered by the self-winding 240 Q caliber that has a perpetual calendar, moon phase and day/night functionality with a power reserve of 48 hours. The case is paired with a shiny black alligator leather bracelet with a white gold fold-over closure. It has a water resistance of 30 meters (98 feet).