The Seiko 7N42-9090 is a watch model based on the 7N42 movement.
Parts List
| 300P03JN03 | crystal - crystal |
| 8M45B1SNW0 | crown - crown |
| FE308BAA1 | case back gasket - case back gasket |
| 86620995 | crystal gasket - plastic gasket for crystal |
| 86620990 | crystal gasket - plastic gasket for crystal |
| 86621010 | bezel gasket - plastic gasket for bezel |
| AD006BAA1 | pusher - button gasket |
| 4722JZ | band - band |
| 4722ZZ | band - metal band |
| 1AX080FSBSR | others - hour hand |
| 2AX120FNBSR | others - minute hand |
| 1AX080FSBSB | others - hour hand |
| 1AX080FSBSS | others - hour hand |
| 3AA125F0AAF | others - second hand |
| 3AA125F0AAH | others - hand |
| 2AX120FNBS3 | others - minute hand |
| 2AX120FNBS1 | others - minute hand |
| 3AA125F0AAR | others - hand |
| 0878587 | others - date dial |
| 7N423 | others - machine code |
| 7N429221XB19 | others - dial |
| 7N429221XE19 | others - dial |
| 7N429221XR19 | others - dial |
| A200BS | others - push pin |
| 0351892 | others - winding stem |
| 7N429090 | others - case back |
| 7N42909061B | others - case |
| 7N42909061A | others - case |
| 82313359 | others - bezel |
| 82851310 | others - case ring |