The Seiko 7N42-8A30 is a watch model based on the 7N42 movement.
Parts List
| 310T58ABS2 | crystal |
| 310T58ABG2 | crystal |
| 8M35A0NNG1 | crown - crown |
| 8M35A0SNW1 | crown - crown |
| FH2981B01 | case back gasket - case back gasket |
| E1034L-LKG | band - link |
| E1035K-LKG | band - link |
| E1034J | band |
| E1035K | band |
| E1034L | band |
| E1035K-BK1G | clasp - clasp |
| E1034L-BK1S | clasp - clasp |
| 3AX130F0ALB | others - second hand |
| 2AB125L0BLE | others - minute hand |
| 1AB080L2BLE | others - hour hand |
| E1034L-EPG | others - endpiece |
| 0351892 | others - winding stem |
| E1035K-EPG | others - endpiece |
| 82830140 | others - case ring |
| 82362629 | others - decorative bezel |
| 82362621 | others - decorative bezel |
| 0878580 | others - date dial |
| 0878588 | others - date dial |
| 7N423 | others - machine code |
| 7N428A30 | others - case back |
| 7N428A3061Z | others - case |
| 7N428A3075Z | others - case |
| 7N428A3098Z | others - case |
| 7N428B0WXG14 | others - dial |
| 7N428B0WXN14 | others - dial |
| 7N428B0WXS13 | others - dial |
| 7N428B0WXS24 | others - dial |
| A180BS | others - push pin |
| 3AX130F0ALG | others - second hand |
| AD006BA12 | others - crown gasket |
| 2AB125L0BLA | others - minute hand |
| 12C52KBM | others - minute hand |
| 1AB080L2BLA | others - hour hand |
| 12C52KBH | others - hour hand |