The Seiko 7N42-0BC0 is a watch model based on the 7N42 movement.
Parts List
| 290P04SN02 | crystal - crystal |
| 290P04HN02 | crystal - crystal |
| 8K50E6SNG3 | crown - crown (3h) |
| 8K50E6SNW1 | crown - crown |
| FE308BAD2 | case back gasket - case back gasket |
| 86565321 | crystal gasket - plastic gasket for crystal |
| 86565320 | crystal gasket - plastic gasket for crystal |
| 86583440 | bezel gasket - plastic gasket for bezel |
| 32S2ZZ | band - band |
| 32S2YZ | band - band |
| 32S2XZ | band - band |
| 32S2JZ | band - band |
| 32S2JZ-LK | band - link |
| 32S2LZ-LK | band - link |
| 32S2XZ-LK | band - link |
| 32S2YZ-LK | band - link |
| 32S2ZZ-LK | band - link |
| 32S2LZ | band - band |
| 32S2LZ-BK | clasp - buckle |
| 32S2LZ-PB | clasp - parts for buckle |
| 32S2JZ-BK | clasp - buckle |
| 32S2JZ-PB | clasp - parts for buckle |
| 32S2XZ-BK | clasp - buckle |
| 32S2XZ-PB | clasp - parts for buckle |
| 32S2YZ-BK | clasp - buckle |
| 32S2YZ-PB | clasp - parts for buckle |
| 32S2ZZ-BK | clasp - buckle |
| 32S2ZZ-PB | clasp - parts for buckle |
| 3AA125F0ANG | others - second hand |
| 3AA125F0ANS | others - second hand |
| 1AB080L4BSG | others - hour hand |
| 1AB080L4BSS | others - hour hand |
| 2AB125L4BSS | others - minute hand |
| 2AB125L4BSG | others - minute hand |
| AD006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 82737920 | others - case ring |
| 81180249 | others - bracelet fixing pipe |
| 81607659 | others - bracelet fixing pin |
| 7N420BC002B | others - case |
| 85931961 | others - bezel |
| 7N420BC001B | others - case |
| 85931969 | others - bezel |
| 7N420BC0 | others - case back |
| 7N420BC003B | others - case |
| 85931964 | others - bezel |
| 7N420BC004B | others - case |
| 7N420BC005B | others - case |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 0878589 | others - date dial |
| 7N420CD8XB13 | others - dial |
| 7N420CD8XL14 | others - dial |
| 7N420CD8XY14 | others - dial |
| 7N420CX8XB14 | others - dial |
| 7N420CX8XL13 | others - dial |
| 7N420CX8XS13 | others - dial |
| 7N423 | others - machine code |