Breguet Classique Phase de Lune 7137

Breguet's Classique Phase de Lune 7137, reference 7137BB/11/9V6, has a 39 mm case in white gold. The case measures 8.7 mm thick, and the sapphire crystal shows the self-winding calibre 502.3 DR1 with its 46-hour power reserve underneath. A sapphire caseback reveals the finishing on the movement, including its hand-engraved gold oscillating weight. The silvery dial carries hand-guilloché work in three distinct patterns across its different indications. Beyond the moon phase and power reserve display, the watch has central seconds and a date function. Breguet fits the piece on an alligator leather strap with a white gold folding clasp. The case is water resistant to 30 metres.