The Seiko 7N42-7020 is a watch model based on the 7N42 movement.
Parts List
| 280W95HK01 | crystal |
| 8M45A5NNG0 | crown |
| 0F240BAA3 | case back gasket - case back gasket |
| B1831C-LKG | band - link |
| B1831G-LKG | band - link |
| B1831C | band |
| B1831G | band |
| B1831G-PB1 | clasp - parts for buckle/clasp |
| B1831C-PB1 | clasp - parts for buckle/clasp |
| B1831G-BK2G | clasp - clasp |
| B1831C-BK2S | clasp - clasp |
| 0351892 | others - winding stem |
| 81181459 | others - bracelet fixing pipe |
| 81603679 | others - bracelet fixing pin |
| 82850970 | others - case ring |
| 0878651 | others - date dial |
| 7N423 | others - machine code |
| 7N427020 | others - case back |
| 7N42702075 | others - case |
| 7N4270207H | others - case |
| 7N427060X914 | others - dial |
| 7N427060X924 | others - dial |
| 7N427060XS14 | others - dial |
| 3AX110FDANG | others - second hand |
| 2AF110SBBCL | others - minute hand |
| 2AF110SBBCA | others - minute hand |
| AD006BA12 | others - crown gasket |
| 1AX080FFBAL | others - hour hand |
| 1AX080FFBAA | others - hour hand |