The Seiko 7N42-0BG0 is a watch model based on the 7N42 movement.
Parts List
| 280PX5JN02 | crystal - crystal (inorganic) |
| 8K50F6SNW1 | crown - crown |
| 8K50F6SNG3 | crown - crown |
| FE308BAD2 | case back gasket - case back gasket |
| 86177922 | crystal gasket - plastic gasket for crystal |
| 86177921 | crystal gasket - plastic gasket for crystal |
| 32W6KZ | band - band |
| 32W6JZ | band - band |
| 4KC5JZ | band - band |
| 4KC4JZ | band - leather band |
| 32W6KZ-LK | band - link |
| 32W6KZ-BK | clasp - buckle |
| 32W6KZ-PB | clasp - parts for buckle |
| 1AX082FBBSW | others - hour hand |
| 2AB112FABSW | others - minute hand |
| 1AX082FBBSB | others - hour hand |
| 2AB112FABSB | others - minute hand |
| 3AX125F3ASF | others - hand |
| 2BC110FCBSG | others - minute hand |
| 3AX120F0ASG | others - second hand |
| 3AX125F3ASW | others - second hand |
| 1AC082FABSS | others - hour hand |
| 2BC110FCBSS | others - minute hand |
| 3AX120F0ASP | others - second hand |
| 1AC082FABSG | others - hour hand |
| 1AX080FPBSS | others - hour hand |
| 2AX115FNBSS | others - minute hand |
| AD006BAD1 | others - crown and stem gasket |
| 0351892 | others - winding stem |
| 7N420BG0 | others - case back |
| 7N420BG001D | others - case |
| 7N420BG003D | others - case |
| 7N420BG002D | others - case |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 7N420CH8XB13 | others - dial |
| 7N420CH8XL13 | others - dial |
| 7N420CH8XS13 | others - dial |
| 7N420CJ8XB13 | others - dial |
| 7N420CJ8XB23 | others - dial |
| 7N420CJ8XG14 | others - dial |
| 7N420CK8XB19 | others - dial |
| 7N420CK8XE19 | others - dial |
| 7N420CK8XS19 | others - dial |
| 7N423 | others - machine code |
| S190BS | others - push pin |
| 82737920 | others - case ring |
| 3AX120F0ASN | others - second hand |