Seiko Y553-5009 Watch Guide The Seiko Y553-5009 is a watch model based on the Y553 movement.Parts ListSA3N70GNcrystal35M60NA1crownDA0070Bcase back gasketOther models with the same movementY553-5019Y553-5020Y553-8002Y553-8009Y553-8019Y553-8020