The Seiko 8420-7650 is a watch model based on the 8420 movement.
Parts List
| ESAN48SH01 | crystal |
| 25M02NS3 | crown |
| 0H2395N01 | case back gasket |
| GB29A | band - metal band |
| 08V32JGH | others - hour hand |
| 08V32JGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
