[Complete Set] Blancpain, Classic Series, Model: 6639A-3631-55B, Automatic mechanical, rose gold, diameter: 42mm. This watch combines the traditional three-day calendar function with the modern and convenient 8-day power reserve function, and has a moon phase display at the six o 'clock position. There are day and month Windows displayed at the 12 o 'clock direction, and it is water-resistant to 30 meters for daily use.