Adjusting a Perpetual Calendar Watch

      Compared to other timepieces, a perpetual calendar is not only complex in function but also notoriously difficult to adjust. Naturally, if worn daily, the movement remains in constant operation, eliminating the need for adjustment. However, if left unworn for several days, causing the movement to stop, the adjustment process becomes a headache. Each display is interconnected, and improper adjustment can easily lead to the movement jamming.