The Seiko 7N42-0AK0 is a watch model based on the 7N42 movement.
Parts List
| ES0P38JN02 | crystal - crystal |
| 8K50F0SNW1 | crown - crown |
| FE308BAD2 | case back gasket - case back gasket |
| 86585040 | crystal gasket - plastic gasket for crystal |
| 31A4ZG | band - band |
| 31A4ZG-LK | band - link |
| 31A4ZG-BK | clasp - buckle |
| 31A4ZG-PB | clasp - parts for buckle |
| 1AC072FABE1 | others - hour hand |
| 2BC110FCBES | others - minute hand |
| 0351892 | others - winding stem |
| 0878587 | others - date dial |
| AD006BAD1 | others - crown and stem gasket |
| 81606439 | others - bracelet fixing pin |
| 81181879 | others - bracelet fixing pipe |
| 7N420AK001B | others - case |
| 82737920 | others - case ring |
| 7N420AK0 | others - case back |
| 7N420BC8XL13 | others - dial |
| 7N423 | others - machine code |
| 84333244 | others - dial ring |
| 3AA125F1AN1 | others - second hand |
| ES0P38JN02 | crystal - crystal |
| 8K50F0SNW1 | crown - crown |
| FE308BAD2 | case back gasket - case back gasket |
| 86585040 | crystal gasket - plastic gasket for crystal |
| 31A4ZG | band - band |
| 31A4ZG-LK | band - link |
| 31A4ZG-BK | clasp - buckle |
| 31A4ZG-PB | clasp - parts for buckle |
| 1AC072FABE1 | others - hour hand |
| 2BC110FCBES | others - minute hand |
| 0351892 | others - winding stem |
| 0878587 | others - date dial |
| AD006BAD1 | others - crown and stem gasket |
| 81606439 | others - bracelet fixing pin |
| 81181879 | others - bracelet fixing pipe |
| 7N420AK001B | others - case |
| 82737920 | others - case ring |
| 7N420AK0 | others - case back |
| 7N420BC8XL13 | others - dial |
| 7N423 | others - machine code |
| 84333244 | others - dial ring |
| 3AA125F1AN1 | others - second hand |