The Seiko 7N42-0BT0 is a watch model based on the 7N42 movement.
Parts List
| 300P20HN02 | crystal - crystal (inorganic) |
| 8K45D2SNW1 | crown - crown |
| 8K45D2SNG2 | crown - crown (3h) |
| FE308BAD2 | case back gasket - case back gasket |
| 86178611 | crystal gasket - plastic gasket for crystal |
| 86178610 | crystal gasket - plastic gasket for crystal |
| 33K0JZ | band - band |
| 33K0ZZ | band - band |
| 33K0JZ-LK | band - link |
| 33K0ZZ-LK | band - link |
| 33K0ZZ-BK | clasp - buckle |
| 33K0ZZ-PB | clasp - parts for buckle |
| 33K0JZ-BK | clasp - buckle |
| 33K0JZ-PB | clasp - parts for buckle |
| 3AX130FMAEG | others - second hand |
| 1AF075ABBES | others - hour hand |
| 2BF115A2BES | others - minute hand |
| 2BF115A2BEG | others - minute hand |
| 1AC082FABES | others - hour hand |
| 2BC120FABES | others - minute hand |
| 3AX130FMAE1 | others - second hand |
| 1AF075ABBEG | others - hour hand |
| 2BC120F2BES | others - minute hand |
| 7N420BT002B | others - case |
| 81180249 | others - bracelet fixing pipe |
| 0351892 | others - winding stem |
| 81606529 | others - bracelet fixing pin |
| 82737920 | others - case ring |
| 7N420BT001B | others - case |
| AD006BAD1 | others - crown and stem gasket |
| 7N420BT0 | others - case back |
| 7N420BT002A | others - case |
| 7N420BT003A | others - case |
| 7N420BT003B | others - case |
| 0878580 | others - date dial |
| 0878589 | others - date dial |
| 7N420DE8XL14 | others - dial |
| 7N420DE8XN13 | others - dial |
| 7N420DF0XB13 | others - dial |
| 7N420DF0XL13 | others - dial |
| 7N420DF0XS13 | others - dial |
| 7N420DF8XB13 | others - dial |
| 7N420DF8XL13 | others - dial |
| 7N420DF8XS13 | others - dial |
| 7N420DG8XL13 | others - dial |
| 7N420DG8XS13 | others - dial |
| 7N423 | others - machine code |