Citizen CB1 Series Instruction Manual page 3

Thank you for your purchase of this Citizen watch.
Before using the watch, read this instruction manual carefully to ensure
correct use.
After reading, be sure to store this manual in a safe place should it be
needed for future reference.
To determine the movement number
Your watch features a case number engraved on
the case back (refer to figure to the right).
The first four characters of the case number
represent the movement caliber number of the
watch.
In the example on the right, "1234" is the
movement number.
Engraving position example
The engraving position may differ
depending on watch model.
1