The Seiko 5421-008A is a watch model based on the 5421 movement.
Parts List
| 200W16GA00 | crystal - crystal |
| 35M78NS1 | crown - crown |
| FH2081B0A | case back gasket - case back gasket |
| 86178170 | crystal gasket - plastic gasket for crystal |
| 86564040 | bezel gasket - plastic gasket for bezel |
| DA16A | band - band |
| 0354705 | others - winding stem |
| 82331401 | others - bezel |
| 82706060 | others - case ring |
| 5421008A98 | others - case |
| 54210350XB1M | others - dial |
| 54211 | others - machine code |
| 84302203 | others - dial ring |
| A150BS | others - push pin |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 5421
