ORIENT STAR RA-AK0405Y Manual De Instrucciones página 6

 HOW TO IDENTIFY THE CALIBER NUMBER
Check the caliber number by referring to the model number of your watch or
the case code on the watch's case back.
1. Searching by the model number
Check the model number on the guarantee supplied with your watch. You
can also see the number on the product tag put on the watch.
When the model number is 13 digits:
The 4th and 5th digits is the caliber number.
(Ex.) R¨- XXXXXXXXXX
When the model number is 10 digits :
The 1st and 2nd digits is the caliber number.
(Ex.) XXXXXXXXXX
2. Searching by the case code
Check the case code on the case back of your watch.
(A) Watch with EPSON engraving
(A) It has displayed as XXXX-XXXX.
The first three digits indicate the caliber number.
(In the example, F6D is Cal.)
(B) It has displayed as XXXX-XX.
The first two digits indicate the caliber number.
(In the example, AA is Cal.)
* The place of case code may vary and its letter size may be small and
difficult to see depending on the characteristics of watches.
* The pictures and illustrations on this manual may differ from the actual
appearance of your watch but the function and operation procedures are
the same.
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(B) Watch with ORIENT engraving
Case code
Case code