Seiko Caliber 6531 No technical information found for this movement.Watches with the 6531 movement6531-50006531-50106531-50206531-50296531-50306531-50606531-50696531-50706531-50806531-50906531-51006531-51106531-51206531-51296531-51306531-51406531-51506531-51706531-51806531-51906531-60006531-600A6531-60106531-60206531-60306531-60406531-604A6531-604B6531-604C6531-604E6531-8000