The Seiko 7N42-7C00 is a watch model based on the 7N42 movement.
Parts List
| 290P03HN02 | crystal - crystal (inorganic) |
| 8K50E6SNW1 | crown - crown |
| 8K50E6SNG1 | crown - crown |
| FE308BAD2 | case back gasket - case back gasket |
| 86565321 | crystal gasket - plastic gasket for crystal |
| 86565320 | crystal gasket - plastic gasket for crystal |
| 86178690 | bezel gasket - plastic gasket for bezel |
| 30H6XB | band - metal band |
| 30H6ZB | band - metal band |
| 30H6JB | band - band |
| 30H6LB | band - band |
| 30H6KB | band - band |
| 30H6JB-LK3 | band - link |
| 30H6KB-LK | band - link |
| 30H6LB-LK5 | band - link |
| 30H6XB-LK5 | band - link |
| 30H6ZB-LK3 | band - link |
| 30H6LB-PB4 | clasp - parts for buckle |
| 30H6KB-PB | clasp - parts for buckle |
| 30H6JB-PB4 | clasp - parts for buckle |
| 30H6JB-BKD | clasp - buckle |
| 30H6KB-BK | clasp - buckle |
| 30H6LB-BKD | clasp - buckle |
| 30H6ZB-BKD | clasp - buckle |
| 30H6ZB-PB4 | clasp - parts for buckle |
| 30H6XB-BKD | clasp - buckle |
| 30H6XB-PB4 | clasp - parts for buckle |
| 3AX130F0AES | others - second hand |
| 3AX130F0AEG | others - second hand |
| 1AA075LKBEG | others - hour hand |
| 1AA075LKBES | others - hour hand |
| 2AA110LGBEG | others - minute hand |
| 2AA110LGBES | others - minute hand |
| 81190075 | others - bracelet fixing pipe |
| 81607679 | others - bracelet fixing pin |
| 82737920 | others - case ring |
| 7N427C0001 | others - case |
| 82358224 | others - rotating bezel |
| 7N427C00 | others - case back |
| 0351892 | others - winding stem |
| AD006BAD1 | others - crown and stem gasket |
| 7N427C0002 | others - case |
| 82358229 | others - rotating bezel |
| 7N427C0003B | others - case |
| 82358221 | others - bezel |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 7N423 | others - machine code |
| 7N427D58XL13 | others - dial |
| 7N427D58XL24 | others - dial |
| 7N427D58XS14 | others - dial |