The Seiko 5M42-0M50 is a watch model based on the 5M42 movement.
Parts List
| 300PX5LN03 | crystal - crystal |
| 8K55B6SNS0 | crown - crown |
| FE298BA11 | case back gasket - case back gasket |
| 86178610 | crystal gasket - plastic gasket for crystal |
| 86179271 | bezel gasket - plastic gasket for bezel |
| C35A03SMS0A | pusher - button |
| 7C84ZW | band - band |
| 3AA135F0AAJ | others - second hand |
| 3AA135F0AAK | others - hand |
| 1AA075F6BEE | others - hour hand |
| 2AX130F0BEB | others - minute hand |
| 2AX130F0BEE | others - minute hand |
| 1AA075F6BEB | others - hour hand |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BAD1 | others - crown and stem gasket |
| 0351651 | others - winding stem |
| 5M420M5061 | others - case |
| 82296969 | others - bezel |
| 5M420M5061A | others - case |
| 0866636 | others - holding ring for dial |
| 5M420P78XB19 | others - dial |
| 5M420P78XG19 | others - dial |
| 5M425 | others - machine code |
| 84329364 | others - dial ring |
| 84329365 | others - dial ring |
| A200BS | others - push pin |
Caliber 5M42
