Seiko Y709-5049 Watch Guide The Seiko Y709-5049 is a watch model based on the Y709 movement.Other models with the same movementY709-4000Y709-4019Y709-4020Y709-4039Y709-4040Y709-4069Y709-4079Y709-4089Y709-4090Y709-5000Y709-5019Y709-5020Y709-5050