The Seiko 7N42-0CN0 is a watch model based on the 7N42 movement.
Parts List
| 300P03HN02 | crystal - crystal (inorganic) |
| 8K60A3SNS0 | crown - crown (3h) |
| 8K60A3SNG0 | crown - crown (3h) |
| FE308BAD2 | case back gasket - case back gasket |
| 86178611 | crystal gasket - plastic gasket for crystal |
| 86178610 | crystal gasket - plastic gasket for crystal |
| 34L4JG | band - band |
| 34L4JG-LK | band - link |
| 34L4JG-BK | clasp - buckle |
| 34L4JG-PB | clasp - parts for buckle |
| 1AX075FSBEW | others - hour hand |
| 2AX115F4BEW | others - minute hand |
| 1AX075FSBEB | others - hour hand |
| 2AX115F4BEB | others - minute hand |
| 3AX125F3AEW | others - second hand |
| 3AX125F3AEG | others - second hand |
| 3AX125F3AEB | others - second hand |
| 1AX075FSBEG | others - hour hand |
| 2AX115F4BEG | others - minute hand |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| AD006BAD1 | others - crown and stem gasket |
| 7N420CN0 | others - case back |
| 0351892 | others - winding stem |
| 81190075 | others - bracelet fixing pipe |
| 81607699 | others - bracelet fixing pin |
| 82737920 | others - case ring |
| 7N420CN003B | others - case |
| 7N420CN004B | others - case |
| 7N420CN002B | others - case |
| 7N420CN001B | others - case |
| 7N420EM8XB13 | others - dial |
| 7N420EM8XL13 | others - dial |
| 7N420EM8XL24 | others - dial |
| 7N420EM8XS13 | others - dial |
| 7N423 | others - machine code |
| 84357224 | others - dial ring |
| 84357225 | others - dial ring |
| 84357226 | others - dial ring |
| 84357227 | others - dial ring |
| 89870849 | others - ring |