The Seiko 7N42-7189 is a watch model based on the 7N42 movement.
Parts List
| 280P02SN05 | crystal - crystal |
| 8K50A7SNG0 | crown |
| 8K50A7SNW0 | crown - crown |
| FE308BAA1 | case back gasket - case back gasket |
| 86177922 | crystal gasket - plastic gasket for crystal |
| 86177921 | crystal gasket - plastic gasket for crystal |
| 86620530 | crystal gasket - plastic gasket for crystal |
| 86620535 | crystal gasket - plastic gasket for crystal |
| 86179270 | bezel gasket - plastic gasket for bezel |
| 86620430 | bezel gasket - plastic gasket for bezel |
| AD006BAA1 | pusher - button gasket |
| 4640ZG | band - band |
| 4640XG-LK6 | band - link |
| 4640ZG-LK5 | band - link |
| 4640XG | band - band |
| 4640XG-BKX | clasp - buckle |
| 4640ZG-BKX | clasp - buckle |
| 1AH075FBBSS | others - hour hand |
| 82851310 | others - case ring |
| 7N427189 | others - case back |
| 7N42718961A | others - case |
| 82312839 | others - bezel |
| 0351892 | others - winding stem |
| 7N423 | others - machine code |
| 7N42718961B | others - case |
| 7N427421XB13 | others - dial |
| 7N427421XS14 | others - dial |
| B080BS | others - push pin |
| 2AH115FABSS | others - minute hand |
| 3AX125F3ASG | others - second hand |
| 3AX125F3ASS | others - second hand |