The Seiko 7N42-6A90 is a watch model based on the 7N42 movement.
Parts List
| 270A03JN02 | crystal - crystal |
| 8M35A0NNG1 | crown - crown |
| 0F270NA1S | case back gasket - case back gasket |
| 4059LG | band |
| 4059LG-LKG | band - link |
| 4059KG-LKG | band - link |
| 4059KG | band |
| 4059KG-BK2G | clasp - clasp |
| 4059KG-PB1 | clasp - parts for buckle/clasp |
| 4059LG-BK2S | clasp - clasp |
| 4059LG-PB1 | clasp - parts for buckle/clasp |
| 3AA125F0ANG | others - second hand |
| 2AB115L4BDG | others - minute hand |
| 1AB077L2BDG | others - hour hand |
| 0351892 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82830140 | others - case ring |
| 0878580 | others - date dial |
| 0878588 | others - date dial |
| 0878651 | others - date dial |
| 7N423 | others - machine code |
| 7N426A90 | others - case back |
| 7N426A9075Z | others - case |
| 7N426A90SFZ | others - case |
| 7N427B78XG14 | others - dial |
| 7N427B78XS14 | others - dial |
| 7N427B88XS19 | others - dial |
| 82287081 | others - bezel |
| AD006BA12 | others - crown gasket |
| 2AF115L0BCA | others - minute hand |
| 1AF077L0BCA | others - hour hand |