The Seiko 7N42-0AC0 is a watch model based on the 7N42 movement.
Parts List
| 300P28HN03 | crystal - crystal |
| 8K50E6SNW1 | crown - crown |
| FE308BAD2 | case back gasket - case back gasket |
| 0F280BAD2 | case back gasket - case back gasket |
| 86178611 | crystal gasket - plastic gasket for crystal |
| 86178610 | crystal gasket - plastic gasket for crystal |
| 30Z8AM | band - band |
| 30Z8JM | band - band |
| 30Z8AM-LK | band - link |
| 30Z8JM-LK2 | band - link |
| 30Z8AM-BK | clasp - buckle |
| 30Z8JM-BKC | clasp - buckle |
| 30Z8AM-PB | clasp - parts for buckle |
| 30Z8JM-PB3 | clasp - parts for buckle |
| 3AA125F0ANS | others - second hand |
| 1BA077F0BES | others - hour hand |
| 2BA117F0BES | others - minute hand |
| 3AA125F0AA5 | others - second hand |
| 3AA125F0AAH | others - hand |
| 3AA125F0AAX | others - second hand |
| 3AA125F0AZY | others - second hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 7N420AC001A | others - case |
| 82824420 | others - case ring |
| 7N420AC0 | others - case back |
| AD006BAD1 | others - crown and stem gasket |
| 7N420AC001D | others - case |
| 0351892 | others - winding stem |
| 7N420AC002A | others - case |
| 7N420AC002D | others - case |
| 7N420AC003A | others - case |
| 7N420AC003D | others - case |
| 7N420AC004A | others - case |
| 7N420AC004D | others - case |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 7N420AG0XB13 | others - dial |
| 7N420AG0XB23 | others - dial |
| 7N420AG0XL13 | others - dial |
| 7N420AG0XS13 | others - dial |
| 7N420AG0XS23 | others - dial |
| 7N420AG8XB13 | others - dial |
| 7N420AG8XB23 | others - dial |
| 7N420AG8XL13 | others - dial |
| 7N420AG8XS13 | others - dial |
| 7N420AG8XS23 | others - dial |
| 7N423 | others - machine code |