The Seiko 7N42-0ER0 is a watch model based on the 7N42 movement.
Parts List
| 320P02SN02 | crystal - crystal (sapphire) |
| 8K60DMSNG1 | crown - crown (3h) |
| 8K60DMSNW1 | crown - crown (3h) |
| FE328BAD2 | case back gasket - case back gasket |
| 86566880 | crystal gasket - plastic gasket for crystal |
| 86566881 | crystal gasket - plastic gasket for crystal |
| 35X1JE | band - metal band |
| 35X1LE | band - metal band |
| 35X1JE-LK | band - link |
| 35X1LE-LK | band - link |
| 35X1LE-PB | clasp - parts for buckle/clasp |
| 35X1JE-PB | clasp - parts for buckle/clasp |
| 35X1LE-BK | clasp - clasp |
| 35X1JE-BK | clasp - clasp |
| 1AA085L4BEG | hand - hour hand |
| 1AA085L4BES | hand - hour hand |
| 2BA120L8BEG | hand - minute hand |
| 2BA120L8BES | hand - minute hand |
| 3AX130F0AES | others - second hand |
| 3AX130F0AEG | others - second hand |
| 3AX130F0AEN | others - second hand |
| 82845500 | others - case ring |
| 0351892 | others - winding stem |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 35X1JE-EP | others - endpiece |
| 35X1LE-EP | others - endpiece |
| 7N420ER0 | others - case back |
| 7N420ER001B | others - case |
| 7N420ER002B | others - case |
| 7N420ER003B | others - case |
| 7N420ER004B | others - case |
| 7N420HH8XB13 | others - dial |
| 7N420HH8XS13 | others - dial |
| 7N420HH8XS24 | others - dial |
| 7N423 | others - machine code |
| 84386024 | others - dial ring(set) |
| 84386025 | others - dial ring(set) |
| S200BS | others - push pin |
| AD006BAD1 | others - crown and stem gasket |