The Seiko 5421-5000 is a watch model based on the 5421 movement.
Parts List
| ES6N36AN00 | crystal |
| ES6N36AN | crystal |
| 35M94NA1 | crown |
| 35M94NS1 | crown |
| 0G1700N01 | case back gasket |
| 0G0055B0 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
| ALL52 | band - leather band |
| BFJ05G | band - leather band |
| 07SC02NG | others - second hand |
| A100BS | others - push pin (for mb) |
| 54210020XG14 | others - dial |
| 54211 | others - machine code |
| 5421500025 | others - case |
| 82705240 | others - case ring |
| 0354705 | others - winding stem |
| 07T04NGH | others - hour hand |
Caliber 5421
