The Seiko 7N42-6A40 is a watch model based on the 7N42 movement.
Parts List
| 270WB4JK01 | crystal - crystal |
| 8M45A4NNG1 | crown - crown |
| 0F270NA1S | case back gasket - case back gasket |
| ZNJ29K | band - band |
| ZNJ28K | band - band |
| 1AX080F6BAE | others - hour hand |
| 3AX130F7ANG | others - second hand |
| 2AF110S0BAE | others - minute hand |
| 82830140 | others - case ring |
| 7N426A4075Z | others - case |
| 7N426A40 | others - case back |
| 0878651 | others - date dial |
| 7N423 | others - machine code |
| 7N426B08X914 | others - dial |
| 7N426B08X924 | others - dial |
| A170BS | others - push pin |
| 0351892 | others - winding stem |
| AD006BA12 | others - crown gasket |