Citizen Campanola CTU57-0821 Minute RepeaterModel: Citizen Campanola "Grand Complication" CTU57 0821 Minute Repeater Features: The Functionality. The Campanola Grand Complication is aptly named. A moon phase, leap year perpetual triple calendar, 12 hour split time chronograph, 24 hour dial, and a minute repeater. Most of those functions wont need any explanation, but a minute repeater deserves to be talked about. The Minute Repeater. When you press and hold the minute repeater button, a chime