The Seiko 7N42-7A70 is a watch model based on the 7N42 movement.
Parts List
| 280W56GN00 | crystal |
| 8M35A0NNG1 | crown - crown |
| 8M35A0NNG7 | crown |
| 8M35A0SNW1 | crown - crown |
| 0F260NA1S | case back gasket - case back gasket |
| 0A2600N01 | case back gasket - case back gasket |
| 86570560 | crystal gasket - plastic gasket for crystal |
| 86178600 | bezel gasket - plastic gasket for bezel |
| Z1582K-LKG | band - link |
| Z1582L | band - metal band |
| Z1582L-LKG | band - link |
| Z1582K | band |
| Z1582J | band |
| Z1582M | band |
| Z1582K-BK1G | clasp - clasp |
| Z1582L-BK1S | clasp - clasp |
| Z1582K-PB1 | clasp - parts for buckle/clasp |
| Z1582L-PB1 | clasp - parts for buckle/clasp |
| 3AA125F3ANG | others - second hand |
| 3AA125F3ANS | others - second hand |
| 2AH125A1BAA | others - minute hand |
| 0351892 | others - winding stem |
| 82830140 | others - case ring |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 0878588 | others - date dial |
| 7N423 | others - machine code |
| 7N427A70 | others - case back |
| 7N427A7061Z | others - case |
| 7N427A7075Y | others - case |
| 7N427A7075Z | others - case |
| 7N427A7098Y | others - case |
| 7N427A7098Z | others - case |
| 7N427B0WXG14 | others - dial |
| 7N427B0WXL13 | others - dial |
| 7N427B0WXN14 | others - dial |
| 7N427B0WXS13 | others - dial |
| 7N427B18XS19 | others - dial |
| 82284821 | others - bezel |
| 82284824 | others - bezel |
| 82284829 | others - bezel |
| A180BS | others - push pin |
| AD006BA12 | others - crown gasket |
| 2AB120L2BLD | others - minute hand |
| 2AB120L2BLF | others - minute hand |
| 2AB120L2BLE | others - minute hand |
| 1AB075L2BLD | others - hour hand |
| 1AB075L2BLF | others - hour hand |
| 1AB075L2BLE | others - hour hand |
| 1AH085A1BAA | others - hour hand |