Seiko 7123-8500 Watch Guide The Seiko 7123-8500 is a watch model based on the 7123 movement.Caliber 7123Other models with the same movement7123-50007123-50107123-50307123-503A7123-503B7123-50407123-50497123-50507123-50597123-505A7123-50607123-50697123-506A7123-50707123-50807123-50907123-51007123-51097123-51107123-51207123-51307123-51407123-514A7123-51507123-51607123-516A7123-51707123-51807123-51907123-519A7123-519B7123-52007123-52107123-52117123-52207123-52307123-52397123-52407123-52507123-52607123-52707123-52807123-528A7123-52907123-529A7123-53007123-530A7123-53107123-53207123-532A7123-53407123-534A7123-53507123-53597123-535A7123-70007123-70107123-70207123-70307123-70397123-70407123-70507123-70607123-70707123-70807123-70907123-71007123-71107123-71207123-71297123-71307123-71397123-71407123-71507123-71607123-71707123-71807123-71907123-80007123-80107123-80207123-80307123-80407123-80507123-80597123-80607123-80707123-80807123-80907123-81007123-81107123-81207123-81407123-81497123-81507123-81607123-81707123-81807123-82007123-82107123-82197123-821A7123-82207123-823A7123-823B7123-823F7123-82607123-82707123-82807123-82907123-83007123-83107123-83197123-83207123-83307123-83397123-83407123-83497123-83507123-83607123-83707123-83737123-83807123-83997123-84107123-84197123-84207123-84297123-84307123-84397123-84407123-84507123-84607123-84697123-84807123-84907123-84997123-85107123-85197123-85207123-85307123-85407123-85507123-85607123-85707123-90007123-90097123-90107123-90207123-9029