The Seiko 7N42-0ET0 is a watch model based on the 7N42 movement.
Parts List
| 320AB6JN02 | crystal - crystal (inorganic) |
| 8K40ZNSNGA | crown - crown (3h) |
| 8K40ZNSNWA | crown - crown (3h) |
| 0F290BAD2 | case back gasket - case back gasket |
| 4A5B1JX | band - metal band |
| 4A5B1JXLK | band - link |
| 4A5B1LX | band - metal band |
| 4A5B1LXLK | band - link |
| M0H3111K9 | band - metal band |
| M0H31KLK | band - link |
| N0BZ22SA03B | clasp - clasp |
| N0BZ22SE02B | clasp - clasp |
| 1BG092L0BDG | hand - hour hand |
| 1BG092L0BDS | hand - hour hand |
| 2BG135L0BDG | hand - minute hand |
| 2BG135L0BDS | hand - minute hand |
| 3AA125F0ANG | others - second hand |
| 3AA125F0ANS | others - second hand |
| 0351892 | others - winding stem |
| 81181459 | others - bracelet fixing pipe |
| 81601039 | others - bracelet fixing pin |
| 82845500 | others - case ring |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 7N420ET0 | others - case back |
| 7N420ET001B | others - case |
| 7N420ET002B | others - case |
| 7N420ET003B | others - case |
| 7N420HJ8XB13 | others - dial |
| 7N420HJ8XG14 | others - dial |
| 7N420HJ8XS13 | others - dial |
| 7N420HJ8XS24 | others - dial |
| 7N423 | others - machine code |
| S190BS | others - push pin |
| W180350BS | others - pin |
| W185350BS | others - wave pin (band) |
| AD006BAD1 | others - crown and stem gasket |