Seiko Caliber 5P31 No technical information found for this movement.Watches with the 5P31 movement5P31-0A105P31-50005P31-50105P31-50205P31-50305P31-50405P31-50495P31-50505P31-50605P31-50695P31-50705P31-507A5P31-50805P31-508A5P31-50905P31-51005P31-51105P31-51205P31-51305P31-51405P31-514A5P31-51505P31-51605P31-51705P31-517A5P31-51805P31-51905P31-519A5P31-519B5P31-52005P31-52505P31-52605P31-52705P31-53105P31-53205P31-53305P31-5A005P31-5A0A5P31-5A105P31-5A205P31-5A305P31-5A405P31-5A505P31-5A595P31-5A605P31-5A695P31-5A705P31-5A805P31-5A8A5P31-5A905P31-5A9A5P31-5B005P31-5B105P31-5B205P31-5B305P31-5B405P31-5B505P31-5B705P31-5B805P31-5B8A5P31-5B905P31-5C305P31-5C3A5P31-5C405P31-5C505P31-5D005P31-5D105P31-5D405P31-5D605P31-5D6A5P31-5D6B5P31-5D705P31-5D805P31-5D8A5P31-5D8B5P31-5D905P31-5E005P31-5E105P31-5E1A5P31-60005P31-600A5P31-60105P31-60205P31-60305P31-60405P31-60505P31-605A5P31-60605P31-60705P31-60805P31-60905P31-61105P31-61205P31-61305P31-61605P31-61805P31-61905P31-62005P31-62105P31-62205P31-62305P31-62405P31-62505P31-625A5P31-62605P31-62705P31-62805P31-6A005P31-6A105P31-6A205P31-6A2A5P31-6A305P31-6A3A5P31-6A3B5P31-6A3C5P31-6A405P31-6A505P31-6A605P31-6A6A5P31-6A6B5P31-6A705P31-6A7A5P31-6A805P31-6A905P31-6B005P31-6B105P31-6B505P31-6B605P31-6B705P31-6B805P31-6B905P31-6C005P31-6C105P31-6C305P31-6C405P31-6C505P31-6C605P31-6C705P31-6C805P31-6C905P31-6C9A5P31-6D005P31-6D105P31-6D205P31-6D305P31-6D405P31-70005P31-70095P31-70195P31-70205P31-70305P31-70405P31-7A005P31-7A105P31-7A205P31-7A305P31-7A405P31-7A505P31-7A805P31-7A905P31-80005P31-800A5P31-800B5P31-9A005P31-9A0A