The Seiko 8420-5970 is a watch model based on the 8420 movement.
Parts List
| ES6N86SN00 | crystal |
| 25M04EE1 | crown |
| 0Z1601N01 | case back gasket |
| WI065 | others - other band |
| 05R20DGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
Seiko 8420-5970 Watch Guide