The Seiko 5421-007B is a watch model based on the 5421 movement.
Parts List
| 210W16GN00 | crystal - crystal |
| 35M78NS1 | crown - crown |
| FH2181B0A | case back gasket - case back gasket |
| 86564000 | crystal gasket - plastic gasket for crystal |
| HL28A | band - band |
| 08SC14NG | others - second hand |
| 07T20BGH | others - hour hand |
| 07T20BGM | others - minute hand |
| 0354707 | others - winding stem |
| 82706040 | others - case ring |
| 5421007B6W | others - case |
| 5421034LXY14 | others - dial |
| 54211 | others - machine code |
| A150BS | others - push pin |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 5421
