The Seiko 7N42-0EZ0 is a watch model based on the 7N42 movement.
Parts List
| 270PA6JN02 | crystal - crystal (inorganic) |
| 8K50G2SNN3 | crown - crown (3h) |
| 8K50G2SNW1 | crown - crown |
| FE298BAD2 | case back gasket - case back gasket |
| 86176950 | crystal gasket - plastic gasket for crystal |
| M077327J0 | band - metal band |
| M077327M0 | band - metal band |
| S200BS | others - push pin |
| AD006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 0G301BA12 | others - rotating bezel gasket |
| 7N420EZ001C | others - case |
| 7N420EZ002C | others - case |
| 7N420EZ003C | others - case |
| 7N420EZ004C | others - case |
| 7N420EZ005C | others - case |
| 7N420HV4X919 | others - dial |
| 7N420HV4X929 | others - dial |
| 7N420HV4XE19 | others - dial |
| 7N420HV4XL19 | others - dial |
| 7N420HV4XY19 | others - dial |
| 7N423 | others - machine code |