Seiko 5R77-0AC0 Watch Guide The Seiko 5R77-0AC0 is a watch model based on the 5R77 movement.Parts ListACB8DWband - leather bandS200BSothers - push pinOther models with the same movement5R77-0AA05R77-0AB05R77-0AD05R77-0AE05R77-0AF0