What is a perpetual calendar watch? What's the difference with general mechanical watches?

A perpetual calendar refers to a watch that does not need to manually assign dates and months within 10 thousand years.

The difference between perpetual calendar watch and ordinary mechanical watch;

1, the perpetual calendar will automatically and correctly jump to 1 of next month according to whether the end of the month is 3 1 of a big month or 30/of a small month. The calendar design of ordinary mechanical watches takes 3 1 day as a cycle.

2. The perpetual calendar table can be recognized automatically, so there is no need to adjust it manually. Ordinary mechanical watches are adjusted on the last day of each month.

3. Due to the complicated structure, the price of perpetual calendar watches is higher, while the price of ordinary mechanical watches is lower.

References:

Perpetual Calendar-Baidu Encyclopedia