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 10-digit model number
Check the 10-digit model number on the guarantee supplied with your watch. You can also see the number on the product tag put on the watch. Its second
and third digits indicate the caliber number of your watch. Example: If the model number is “AA00001B”, the caliber number is “AA”.