The Seiko 7N42-0EF0 is a watch model based on the 7N42 movement.
Parts List
| 320PC0JN02 | crystal - crystal (inorganic) |
| 8K60DMSNG1 | crown - crown (3h) |
| 8K60DMSNW1 | crown - crown (3h) |
| FE328BAD2 | case back gasket - case back gasket |
| 86566880 | crystal gasket - plastic gasket for crystal |
| 35X1JE | band - metal band |
| 35X1LE | band - metal band |
| 35X1LE-LK | band - link |
| 35X1JE-LK | band - link |
| 35X1JE-PB | clasp - parts for buckle/clasp |
| 35X1LE-BK | clasp - clasp |
| 35X1JE-BK | clasp - clasp |
| 35X1LE-PB | clasp - parts for buckle/clasp |
| 1AA080F4BE2 | hand - hour hand |
| 1AA080F4BEM | hand - hour hand |
| 2BA120FMBEG | hand - minute hand |
| 2BA120FMBEW | hand - minute hand |
| 3AX125F3AE9 | others - second hand |
| 3AX125F3AEG | others - second hand |
| 3AX125F3AEJ | others - hand |
| 82845500 | others - case ring |
| 0351892 | others - winding stem |
| AD006BAD1 | others - crown and stem gasket |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 7N420EF0 | others - case back |
| 7N420EF001B | others - case |
| 7N420EF002B | others - case |
| 7N420EF003B | others - case |
| 7N420GW8XB13 | others - dial |
| 7N420GW8XB24 | others - dial |
| 7N420GW8XL13 | others - dial |
| 7N423 | others - machine code |
| S200BS | others - push pin |
| 35X1JE-EP | others - endpiece |
| 35X1LE-EP | others - endpiece |