The Seiko 7N42-7C30 is a watch model based on the 7N42 movement.
Parts List
| 330P03HB0A | crystal |
| 8K40B3TNG0 | crown |
| FE308BAD2 | case back gasket - case back gasket |
| 86566901 | crystal gasket - plastic gasket for crystal |
| 86583220 | bezel gasket - plastic gasket for bezel |
| 30N8MB | band - metal band |
| AD006BAD1 | others - crown and stem gasket |
| 1AB075LMBEG | others - hour hand |
| 2AB120LHBEG | others - minute hand |