The Seiko 7N42-0BW0 is a watch model based on the 7N42 movement.
Parts List
| 290P02HN02 | crystal - crystal (inorganic) |
| 8K40B3TNW0 | crown - crown |
| FE298BA11 | case back gasket - case back gasket |
| 86565321 | crystal gasket - plastic gasket for crystal |
| 33N0MB | band - band |
| 33N0MB-LK | band - link |
| 33N0MB-PB | clasp - parts for buckle |
| 1BB080L2BDS | others - hour hand |
| 2BB120L6BDS | others - minute hand |
| 3AA125F0ANS | others - second hand |
| A100BS | others - push pin (for mb) |
| 0878580 | others - date dial |
| 7N420DM8XY13 | others - dial |
| 7N423 | others - machine code |
| 7N420BW0 | others - case back |
| 7N420BW001B | others - case |
| AD006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 82738200 | others - case ring |