The Seiko 7N42-0DK0 is a watch model based on the 7N42 movement.
Parts List
| 280P02SN02 | crystal - crystal (sapphire) |
| 8K50ZMSNGB | crown - crown (3h) |
| 8K50ZMSNWB | crown - crown (3h) |
| FE298BAD2 | case back gasket - case back gasket |
| 86177922 | crystal gasket - plastic gasket for crystal |
| 86177921 | crystal gasket - plastic gasket for crystal |
| 86178900 | bezel gasket - plastic gasket for bezel |
| 35R7VB | band - metal band |
| 34D6XB-LK | band - link |
| 34D6ZB-LK | band - link |
| 35R7VBLK | band - link |
| 34D6XB | band - band |
| 34D6ZB | band - band |
| 34D6ZB-BK | clasp - buckle |
| 34D6ZB-PB | clasp - parts for buckle |
| 34D6XB-BK | clasp - buckle |
| 34D6XB-PB | clasp - parts for buckle |
| 1AF075L4BEG | others - hour hand |
| 2BF110L4BEG | others - minute hand |
| 1AF075L4BES | others - hour hand |
| 2BF110L4BES | others - minute hand |
| 3AX125F3AEG | others - second hand |
| 3AX125F3AES | others - second hand |
| 7N420DK0 | others - case back |
| 7N420DK001B | others - case |
| 7N420DK002B | others - case |
| 7N420DK003B | others - case |
| 87330144 | others - bezel |
| 87330145 | others - bezel |
| 87330149 | others - bezel |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 0878589 | others - date dial |
| 7N420EF8XB34 | others - dial |
| 7N420EF8XN13 | others - dial |
| 7N420EF8XS14 | others - dial |
| 7N423 | others - machine code |
| 84352767 | others - dial ring |
| 8435276A | others - dial ring |
| 8435276B | others - dial ring |
| 81190075 | others - bracelet fixing pipe |
| 81607719 | others - bracelet fixing pin |
| 0351892 | others - winding stem |
| 82738200 | others - case ring |
| AD006BAD1 | others - crown and stem gasket |