The Seiko 7N42-0CKA is a watch model based on the 7N42 movement.
Parts List
| 280PX5JN02 | crystal - crystal (inorganic) |
| 8K50E6SNW1 | crown - crown |
| 8K50E6SNG3 | crown - crown (3h) |
| FE298BAD2 | case back gasket - case back gasket |
| 86177921 | crystal gasket - plastic gasket for crystal |
| 86178900 | bezel gasket - plastic gasket for bezel |
| 34E5YZ | band - metal band |
| 34E5ZZ | band - metal band |
| 34E5YZ-LK | band - link |
| 34E5ZZ-LK | band - link |
| 34E5YZ-BK | clasp - buckle |
| 34E5YZ-PB | clasp - parts for buckle |
| 34E5ZZ-BK | clasp - buckle |
| 34E5ZZ-PB | clasp - parts for buckle |
| 2AE115LABE1 | others - minute hand |
| 3AA125F0ANG | others - second hand |
| 3AA125F0ANS | others - second hand |
| 1AE080LABES | others - hour hand |
| 1AE080LABEG | others - hour hand |
| 2AE115LABE2 | others - minute hand |
| 7N420CKA | others - case back |
| 7N420CKA01B | others - case |
| 7N420CKA05B | others - case |
| 0878580 | others - date dial |
| 34E5YZ-EP | others - endpiece |
| 81190075 | others - bracelet fixing pipe |
| 7N420EH8XS13 | others - dial |
| 7N420EH8XS24 | others - dial |
| 7N423 | others - machine code |
| 85936121 | others - bezel |
| 81611629 | others - bracelet fixing pin |
| 82830140 | others - case ring |
| 85936149 | others - bezel |
| AD006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |