Blancpain Bathyscaphe Quantième Complet Phases de Lune

Blancpain's Bathyscaphe Quantième Complet Phases de Lune, reference 5054 0153 NABA, is a dive watch with a 43.6 mm ceramic case. The case measures 13.4 mm thick and carries a unidirectional rotating bezel. A sapphire crystal covers the sunburst green dial, which sits under the self-winding calibre 6654.P.4 and its 72-hour power reserve. The dial handles a full calendar with day, date and month, along with a moon phase display and central seconds. Lug width is 23 mm, matched to a textile strap on a pin buckle. This is a busy dial for a tool watch, but the layout keeps each function legible. The screw-down elements and case construction hold water resistance to 300 metres.