Patent ID: 8111587

Claim:
A watch with a calendar mechanism equipped with a month indicator and a date indicator, the watch comprising: a date indicator indicating date; a month indicator rotating based on rotation of the date indicator to indicate month; a date indicator driving wheel formed so as to make one rotation in 24 hours; a date feeding finger formed so as to be capable of causing the date indicator to rotate based on the rotation of the date indicator driving wheel; and a shorter month end feeding lever formed so as to be capable of rotating the date indicator based on the rotation of the date indicator driving wheel and the rotation of the month indicator, wherein the date indicator includes a date indicating surface portion provided with a date letter, a date indicator tooth portion coming into contact with a date feeding portion of the date feeding finger, and a month end tooth for feeding the date indicator at the end of a month, wherein the month indicator includes a month indicating surface portion provided with a month letter, and a month cam for operating a shorter month end feeding lever at the end of a shorter month, wherein the month end tooth of the date indicator is arranged so as to be capable of coming into contact with the shorter month end feeding lever when the date letter indicates a month end, and wherein the shorter month end feeding lever is formed so as to be capable of feeding the date indicator by one day based on the rotation of the date indicator driving wheel and the rotation of the month cam at the end of a shorter month, wherein the watch further comprising a month feeding lever formed so as to be capable of moving based on the rotation of the date indicator to rotate the month indicator, with the month feeding lever being formed so as to be capable of feeding the month indicator at the end of a month.