Vintage Seiko 5 Five 6309 508A AUTOMATIC Men WritwatchSquare Case Silver Bezel Black Dial Not Working for part removal or repair only 37mm Non-Working State: The watch is not running reliably and does not hold a power reserve. Running Symptom: The watch will only begin to run for approximately 5 minutes after being shaken or manually agitated, indicating a problem with the mainspring winding or the gear train (likely dried oils or a worn component). Due to the known mechanical fault, this item is sold as-is. Returns will not be accepted based on the watch's failure to operate.