The Seiko 7N42-7A00 is a watch model based on the 7N42 movement.
Parts List
| 280W56GN00 | crystal |
| 8M40A0NNG1 | crown - crown |
| 0A2800B01 | case back gasket |
| 0H2600B01 | case back gasket - case back gasket |
| 86570560 | crystal gasket - plastic gasket for crystal |
| B1796L | band - metal band |
| B1796L-LKG | band - link |
| B1796C-LKG | band - link |
| B1796G-LKG | band - link |
| B1796J-LKS | band - link |
| B1796J | band - metal band |
| B1796K-LKG | band - link |
| B1796G | band |
| B1796K | band |
| B1796C | band |
| B1796K-PB1 | clasp - parts for buckle/clasp |
| B1796J-BK1S | clasp - clasp |
| B1796J-PB1 | clasp - parts for buckle/clasp |
| B1796K-BK1G | clasp - clasp |
| B1796G-PB1 | clasp - parts for buckle/clasp |
| B1796C-BK1S | clasp - clasp |
| B1796C-PB1 | clasp - parts for buckle/clasp |
| B1796G-BK1G | clasp - clasp |
| B1796L-PB1 | clasp - parts for buckle/clasp |
| B1796L-BK1S | clasp - clasp |
| 3AA125F0ANG | others - second hand |
| 0351892 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82824420 | others - case ring |
| 0878588 | others - date dial |
| 0878589 | others - date dial |
| 0878621 | others - date dial |
| 7N423 | others - machine code |
| 7N427A00 | others - case back |
| 7N427A0075 | others - case |
| 7N427A0075Z | others - case |
| 7N427A0098 | others - case |
| 7N427A0098Z | others - case |
| 7N427A0LXG14 | others - dial |
| 7N427A0WXG14 | others - dial |
| 7N427A0WXL14 | others - dial |
| 7N427A10XS14 | others - dial |
| 7N427A18XS14 | others - dial |
| 82280301 | others - bezel |
| B1796L-EPS | others - endpiece |
| B1796G-EPS | others - endpiece |
| B1796C-EPS | others - endpiece |
| B1796K-EPS | others - endpiece |
| 3AX130F0ALG | others - second hand |
| AD006BA12 | others - crown gasket |
| 2AB115S0BLG | others - minute hand |
| 2AD115A0BAA | others - minute hand |
| 1AD085A0BAA | others - hour hand |
| 11C72LGM | others - minute hand |
| 1AB080S0BLG | others - hour hand |
| 11C72LGH | others - hour hand |