The Seiko 7N42-7131 is a watch model based on the 7N42 movement.
Parts List
| 280P02HN03 | crystal - crystal |
| 40E11NS1 | crown - crown |
| 40E11NA1 | crown - crown |
| FE298BAA1 | case back gasket - case back gasket |
| 86581430 | crystal gasket |
| 86581435 | crystal gasket |
| 86561970 | bezel gasket - plastic gasket for bezel |
| AD006BAA1 | pusher - button gasket |
| 43A5KB | band - band |
| 43A5JB | band - band |
| 4E81JZ | band - band |
| 43A5LB | band - band |
| 43A5KB-LKG | band - link |
| 43A5LB-LKG | band - link |
| 43A5LB-BK1S | clasp - buckle |
| 43A5LB-PB1 | clasp - parts for buckle |
| 43A5KB-BK1G | clasp - buckle |
| 43A5KB-PB1 | clasp - parts for buckle |
| 2AX115FGBLG | others - minute hand |
| 2AX115FGBLS | others - minute hand |
| 1AX075FBBLS | others - hour hand |
| 82850970 | others - case ring |
| 7N42713175A | others - case |
| 82290911 | others - bezel |
| 7N427131 | others - case back |
| 0351892 | others - winding stem |
| 7N42713187A | others - case |
| 82290912 | others - bezel |
| 7N42713187B | others - case |
| 7N42713198A | others - case |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 7N423 | others - machine code |
| 7N42730MXG14 | others - dial |
| 7N42730MXG24 | others - dial |
| 7N42730MXL13 | others - dial |
| 7N42730MXS13 | others - dial |
| A180BS | others - push pin |
| 3AX125F3ALG | others - second hand |
| 3AX125F3ALS | others - second hand |
| 1AX075FBBLG | others - hour hand |