The Seiko 7N42-7A30 is a watch model based on the 7N42 movement.
Parts List
| 290WA6JN01 | crystal |
| 8M35A0NNG1 | crown - crown |
| 0A2800B01 | case back gasket |
| G1515K | band |
| G1515K-LKG | band - link |
| G1515L-LKG | band - link |
| G1515L | band |
| G1515L-PB1 | clasp - parts for buckle/clasp |
| G1515K-PB1 | clasp - parts for buckle/clasp |
| G1515L-BK1S | clasp - clasp |
| G1515K-BK1G | clasp - clasp |
| 3AA125F0ANG | others - second hand |
| 0351892 | others - winding stem |
| 82824420 | others - case ring |
| 0878580 | others - date dial |
| 0878588 | others - date dial |
| 7N423 | others - machine code |
| 7N427A30 | others - case back |
| 7N427A3075Z | others - case |
| 7N427A3098Z | others - case |
| 7N427A38X914 | others - dial |
| 7N427A38XG14 | others - dial |
| 7N427A48XS19 | others - dial |
| 7N427A48XS29 | others - dial |
| A130BS | others - push pin |
| 2AD115S0BAA | others - minute hand |
| AD006BA12 | others - crown gasket |
| 11CR6FGM | others - minute hand |
| 2AD115S0BAC | others - minute hand |
| 1AD080S0BAA | others - hour hand |
| 11CT0FGH | others - hour hand |
| 1AD080S0BAC | others - hour hand |
| 2AB120A2BNG | others - minute hand |
| 12C86NGM | others - minute hand |
| 1AB080A4BNG | others - hour hand |
| 12C86NGH | others - hour hand |