Blancpain 6638-3631-55B
Blancpain, Classic series line, progressive Equality of Time Men's watch, model: 6638, with a mechanical device to reproduce the complex orbit around the sun, the watch has two minute hands respectively indicate the true and mean solar time! Diameter 42mm, automatic machinery, 18K rose gold material, hand-made gold carving pattern, function: perpetual calendar, moon phase.