The Seiko 7N42-0AY0 is a watch model based on the 7N42 movement.
Parts List
| 280A03JN02 | crystal - crystal (inorganic) |
| 8M35G9SNG0 | crown - crown |
| 8M35G9SNG2 | crown - crown |
| 8M35G9SNS0 | crown - crown |
| 0F260BA1S | case back gasket - case back gasket |
| 32D3CG | band - band |
| 32D3KG | band - band |
| 32D3AG | band - band |
| 32D3JG | band - band |
| 32D3LG | band - band |
| 32P2XG | band - band |
| 32D3AG-LK | band - link |
| 32D3CG-LK | band - link |
| 32D3JG-LK | band - link |
| 32D3KG-LK | band - link |
| 32D3LG-LK | band - link |
| 32P2XG-LK | band - link |
| 32P2XG-BK | clasp - buckle |
| 32P2XG-PB | clasp - parts for buckle |
| 32D3LG-PB | clasp - parts for buckle |
| 32D3JG-BK | clasp - buckle |
| 32D3KG-BK | clasp - buckle |
| 32D3AG-BK | clasp - buckle |
| 32D3AG-PB | clasp - parts for buckle |
| 32D3CG-BK | clasp - buckle |
| 32D3CG-PB | clasp - parts for buckle |
| 32D3KG-PB | clasp - parts for buckle |
| 32D3JG-PB | clasp - parts for buckle |
| 32D3LG-BK | clasp - buckle |
| 1AA080A2BNG | others - hour hand |
| 1AA080A2BNS | others - hour hand |
| 2BA115A2BNG | others - minute hand |
| 2BA115A2BNS | others - minute hand |
| 3AA125F1ANS | others - second hand |
| 3AA125F1ANG | others - second hand |
| 7N420AY003D | others - case |
| 7N420AY004B | others - case |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 7N420BZ0XB13 | others - dial |
| 7N420BZ0XS24 | others - dial |
| 7N420BZ8XB13 | others - dial |
| 7N420BZ8XS13 | others - dial |
| 7N420BZ8XS24 | others - dial |
| 7N423 | others - machine code |
| 0351892 | others - winding stem |
| AC006BAD1 | others - crown and stem gasket |
| 81180249 | others - bracelet fixing pipe |
| 81602469 | others - bracelet fixing pin |
| 82738200 | others - case ring |
| 7N420AY001A | others - case |
| 7N420AY0 | others - case back |
| 7N420AY001D | others - case |
| 7N420AY002A | others - case |
| 7N420AY002D | others - case |