The Seiko 7N42-9020 is a watch model based on the 7N42 movement.
Parts List
| 300P01LN03 | crystal - crystal (inorganic) |
| 8M40A0NNG3 | crown - crown |
| 8M40A0SNW1 | crown - crown |
| FE308BAA1 | case back gasket - case back gasket |
| 86590875 | crystal gasket - plastic gasket for crystal |
| 86590870 | crystal gasket - plastic gasket for crystal |
| 86561970 | bezel gasket - plastic gasket for bezel |
| 44C6JZ | band - band |
| 44C6KZ | band - band |
| 44C6LZ | band - band |
| 44C6KZ-LKG | band - link |
| 44C6KZ-BK1G | clasp - buckle |
| 44C6KZ-PB1 | clasp - parts for buckle |
| 3AA125F3ANS | others - second hand |
| 3AA125F3ANG | others - second hand |
| 2AB120LHBSH | others - minute hand |
| 2AX115FGBSC | others - minute hand |
| 2AX115FGBSS | others - minute hand |
| 2AB120LHBSF | others - minute hand |
| 2AX115FGBSG | others - minute hand |
| 1AB075LMBSH | others - hour hand |
| 1AX075FBBSC | others - hour hand |
| 1AX075FBBSS | others - hour hand |
| 1AB075LMBSF | others - hour hand |
| 1AX075FBBSG | others - hour hand |
| 82851310 | others - case ring |
| 7N42902061A | others - case |
| 82282959 | others - bezel |
| 7N429020 | others - case back |
| 7N42902061B | others - case |
| 7N42902075A | others - case |
| 82282951 | others - bezel |
| 0351892 | others - winding stem |
| 7N423 | others - machine code |
| 7N429081XS13 | others - dial |
| 7N429081XS14 | others - dial |
| 7N429081XS24 | others - dial |
| 7N429091XB19 | others - dial |
| 7N429091XL19 | others - dial |
| 7N429091XS19 | others - dial |
| A180BS | others - push pin |
| 7N42902098A | others - case |
| 7N42902098B | others - case |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 0878589 | others - date dial |
| 3AX125F3ASG | others - second hand |
| AD006BA12 | others - crown gasket |
| 3AX125F3ASS | others - second hand |