The Seiko 7N42-6C30 is a watch model based on the 7N42 movement.
Parts List
| 290P44JN03 | crystal - crystal |
| 8K60D6SNW1 | crown - crown |
| FE298BAD2 | case back gasket - case back gasket |
| 86565321 | crystal gasket - plastic gasket for crystal |
| EC80AB | band - band |
| EC81AB | band - band |
| 3AX125F8AES | others - second hand |
| 1AA075GABES | others - hour hand |
| 2BA110FCBES | others - minute hand |
| 81331969 | others - bezel spring |
| 82830140 | others - case ring |
| AD006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 0878587 | others - date dial |
| 7N423 | others - machine code |
| 7N426C94X919 | others - dial |
| 7N426C94X929 | others - dial |
| 84331704 | others - dial ring |
| 84331705 | others - dial ring |
| S200BS | others - push pin |
| 0Z3214B02 | others - rotating bezel gasket |
| 7N426C3001A | others - case |
| 86312949 | others - rotating bezel |
| 7N426C30 | others - case back |
| 7N426C3002A | others - case |