The Seiko 7N42-8A39 is a watch model based on the 7N42 movement.
Parts List
| 310T58ABG2 | crystal |
| 8M35A0NNG1 | crown - crown |
| FH2981B01 | case back gasket - case back gasket |
| E1032K | band |
| E10327 | band - metal band |
| E10327-LKG | band - link |
| E10328 | band - metal band |
| E10328-LKG | band - link |
| E1032K-LKG | band - link |
| E1032L-LKS | band - link |
| E1032L | band |
| E10328-BK1G | clasp - clasp |
| E10327-BK1G | clasp - clasp |
| E1032L-BK1S | clasp - clasp |
| E1032K-BK1G | clasp - clasp |
| 3AA125F0ANG | others - second hand |
| 3AA125F0ANB | others - second hand |
| 0351892 | others - winding stem |
| 82830140 | others - case ring |
| 82362621 | others - decorative bezel |
| 0878580 | others - date dial |
| 0878588 | others - date dial |
| 7N423 | others - machine code |
| 7N428A39 | others - case back |
| 7N428A3975 | others - case |
| 7N428A3998 | others - case |
| 7N428A8WXN14 | others - dial |
| 7N428A9WXG14 | others - dial |
| A180BS | others - push pin |
| AD006BA12 | others - crown gasket |
| 2AB120L4BLC | others - minute hand |
| 1AB075LMBKA | others - hour hand |
| 2AB125L2BLG | others - minute hand |
| 12C42LGM | others - minute hand |
| 1AB085L0BLG | others - hour hand |
| 12C42LGH | others - hour hand |