The Seiko 7N42-7A90 is a watch model based on the 7N42 movement.
Parts List
| 290A03JN02 | crystal - crystal |
| 8M40A0NNG1 | crown - crown |
| 0F280NA1S | case back gasket - case back gasket |
| 4060LZ | band - band |
| 4060XZ-LKG | band - link |
| 4060XZ | band - metal band |
| 4060LZ-LKG | band - link |
| 4A99KB | band |
| 4060LZ-BK2S | clasp - buckle |
| 4060LZ-PB1 | clasp - parts for buckle |
| 4060XZ-BK2G | clasp - buckle |
| 4060XZ-PB1 | clasp - parts for buckle |
| 2AD120AMBNG | others - minute hand |
| 3AA125F0ANG | others - second hand |
| 1AB075A2BAC | others - hour hand |
| 2AB120A2BAA | others - minute hand |
| 0351892 | others - winding stem |
| 82832120 | others - case ring |
| 7N427A906YZ | others - case |
| 82287004 | others - bezel |
| 7N427A90 | others - case back |
| 0878580 | others - date dial |
| 4060LZ-EPG | others - endpiece |
| 4060XZ-EPG | others - endpiece |
| 7N423 | others - machine code |
| 7N427A9075Z | others - case |
| 7N427A9098Z | others - case |
| 7N427B38XS14 | others - dial |
| 7N427B48XL14 | others - dial |
| 7N427B48XS24 | others - dial |
| A190BS | others - push pin |
| AD006BA12 | others - crown gasket |
| 12C86AGM | others - minute hand |
| 1AD075A0BNG | others - hour hand |
| 12C16NGM | others - minute hand |