Seiko Caliber 1320 Technical information (Japan)Technical information (World)Watches with the 1320 movement1320-50001320-50091320-50101320-50191320-50201320-50291320-50301320-50391320-50401320-50491320-50791320-50901320-51001320-51011320-51081320-51091320-51101320-51191320-51501320-51801320-52201320-52291320-52301320-52391320-52401320-52491320-52501320-52591320-52701320-52791320-52801320-52891320-52901320-52991320-53001320-53091320-53101320-53191320-53201320-53291320-53301320-53391320-533A1320-533H1320-53601320-53801320-53901320-54001320-54091320-54101320-54191320-54201320-54291320-54391320-54491320-54591320-54691320-54791320-54891320-54901320-55301320-55391320-55401320-55491320-55501320-55691320-55781320-55791320-55891320-55991320-56091320-56101320-56191320-56201320-56291320-56491320-57101320-57401320-57601320-57691320-57701320-57791320-57801320-59301320-59391320-59401320-59501320-59591320-59601320-59691320-59701320-59791320-59891320-59901320-60001320-600A1320-600B1320-60101320-60201320-60291320-60301320-60391320-603A1320-60401320-60501320-60591320-60601320-60691320-60701320-6079