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Explains how to switch between different watch modes like Time, Calendar, and Alarm.
Guides on setting the digital time and summertime for Cal. C440 and C450.
Details how to set the month, date, and day of the week for the calendar.
Provides instructions for setting the first alarm on Cal. C440 and C450.
Details how to set the second alarm specifically for Cal. C440.
Explains how to operate the chronograph, including start, stop, and split time.
Describes how to set and use the specialized race timer function.
Guides on setting and using the standard timer function.
Explains how to switch between the six functions available on the Cal. C460.
Details how to view the time and calendar for various cities globally.
Guides on setting digital time and summertime for cities and UTC.
Explains how to adjust the calendar for selected cities and UTC.
Details how to set and use Alarm 1 and Alarm 2 for Cal. C460.
Explains how to measure time using the chronograph function.
Guides on setting and using the timer function.
Describes how to select cities and set summertime for zone display.
Checks the battery voltage for proper operation.
Verifies the output signals from the watch mechanism.
Inspects the LC display panel and its connection components.
Examines the connection part within the watch.
Measures the resistance of the watch's coils.
Inspects the train wheel for proper function and clearance.
Checks the mechanism on the dial side for deformation and lubrication.
Measures the timekeeping accuracy of the watch.
Confirms the overall using condition of the watch.
Examines the switch mechanism and push buttons for proper operation.
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