There is a link total of link 36 hours of power reserve when the link watch is fully wound if the striking mechanism is not activated. According to Mr. Haas, if you let the watch chime at 12.59 (the longest sonorous cycle at a full 20 seconds) 13 times, it will still leave you with 12 hours of power reserve. I absolutely do not understand this math but I'll take his word for it.