Blancpain, Villeret, model: 6654A 1127 55B, Automatik, stainless steel, case diameter: 40mm, complete set Diameter: 40mm, stainless steel case, black alligator leather strap Dial: Silver-white radial dial, Roman numeral hour markers, equipped with four full calendar functions of day of the week, month, date and moon phase, classic "smiling face moon phase" display Movement: 6654 automatic winding movement, 72-hour power reserve, 38 gemstone bearings, silicon hairspring, Blancpain self-produced Cal.6654 movement Performance: 30-meter water resistance for daily use, sapphire crystal, and a transparent back for admiring the polished movement Design highlights Classic formal wear aesthetics: Slim case + Roman hour markers, elegant and understated style, suitable for wearing in various scenarios such as business, daily life, and banquets The practical functions of the full calendar: It can directly read the day of the week, month, date and moon phase without frequent adjustments. The moon phase is a highly recognizable smiling moon phase