The Seiko 7N42-0BX0 is a watch model based on the 7N42 movement.
Parts List
| 290P02HC0A | crystal - crystal (inorganic) |
| 8K40B3SNG3 | crown - crown (3h) |
| FE298BA11 | case back gasket - case back gasket |
| 86565321 | crystal gasket - plastic gasket for crystal |
| 86565320 | crystal gasket - plastic gasket for crystal |
| 33N0NB | band - band |
| 34C9VG | band - band |
| 33N0NB-LK | band - link |
| 34C9VG-LK | band - link |
| 34C9VG-BK | clasp - buckle |
| 34C9VG-PB | clasp - parts for buckle |
| 33N0NB-BK | clasp - buckle |
| 33N0NB-PB | clasp - parts for buckle |
| 1BB080L2BDG | others - hour hand |
| 2BB120L6BDG | others - minute hand |
| 3AA125F0ANG | others - second hand |
| A100BS | others - push pin (for mb) |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 0878589 | others - date dial |
| 7N420DM8XB14 | others - dial |
| 7N420DM8XL14 | others - dial |
| 7N420DM8XS14 | others - dial |
| 7N423 | others - machine code |
| AD006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 82738200 | others - case ring |
| 7N420BX0 | others - case back |
| 7N420BX002B | others - case |
| 7N420BX001B | others - case |