The Seiko 5M42-0H50 is a watch model based on the 5M42 movement.
Parts List
| 285P06JR02 | crystal - crystal |
| 8M55A0SNW1 | crown - crown |
| 0G313BA14 | case back gasket - bezel gasket |
| 86583001 | crystal gasket - plastic gasket for crystal |
| 80608049 | pusher - button |
| 4GY01B | band - band |
| 1AC070S0BES | others - hour hand |
| 2AC105S0BES | others - minute hand |
| 3AA110F0ANS | others - second hand |
| 0351651 | others - winding stem |
| 81401069 | others - pusher spacer |
| 81400709 | others - button spring clip |
| 81350460 | others - button spring |
| EB0100B01 | others - button gasket |
| 5M420H50V2 | others - case |
| 0866646 | others - holding ring for dial |
| 0878730 | others - date dial |
| 5M420H10XB19 | others - dial |
| 5M420L10XS19 | others - dial |
| 5M425 | others - machine code |
| A180BS | others - push pin |
| 82838500 | others - case ring |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 5M42
