Xenon clock on wall

[myxklptk]

How do you find out how many days it runs? Simple. Just run it till it stops.

If it runs a week or more but less than two weeks, it is an eight-day movement. Wind it once a week, preferably on the same day of each week.

If it runs more than two weeks but less than a month, it is a 15-day movement. Wind it every other week.

If it runs a month or longer, it is a 31-day. Wind on the same day of each month.