The Seiko 8420-5560 is a watch model based on the 8420 movement.
Parts List
| SA6N80SN00 | crystal - crystal (sapphire) |
| 25M02NE3 | crown - crown |
| 0G1900N01 | case back gasket - case back gasket |
| 86563940 | crystal gasket - plastic gasket for crystal |
| 06R20D1H | others - hour hand |
| WI058 | others - other band |
| WI059 | others - other band |
| 8420556043 | others - case |
| 82706001 | others - case ring |
| 0354815 | others - winding stem |
| 06R12DGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
