The Seiko 9550-5009 is a watch model based on the 9550 movement.
Parts List
| RE3N06SN00 | crystal |
| 25M04NS1 | crown |
| 25M04NA1 | crown - crown |
| 0H2702N01 | case back gasket - case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
Caliber 9550
Seiko 9550-5009 Watch Guide