This perpetual calendar device has a manual rotating perpetual calendar structure. The three-layer scale ring displays the month, day of the week, and date respectively. It also has a moon phase indicator mark. The side knob is used to adjust the date. The kit contains a variety of themed replacement plates, covering starry night mother-of-pearl, wooden geometry, architectural patterns, water ripple enamel and other different craftsmanship, enriching visual expression. Each plate can be replaced individually, giving this piece of equipment a variety of display options. Delivered with original brand gift box. The whole thing is in good condition, the rotation adjustment structure is smooth, and there are no obvious bumps or paint peeling. Notice! This item is a Mid-Autumn Festival VIP gift. Not sold directly by this brand.