The Seiko 5M42-0A90 is a watch model based on the 5M42 movement.
Parts List
| 280A54JR02 | crystal - crystal |
| 280A54JR | crystal |
| 45MA2NA1 | crown - crown |
| FH2981B01 | case back gasket - case back gasket |
| EG0060B0 | case back gasket |
| 80600721 | pusher |
| 4A06KZ | band - band |
| 3AX130F7ANG | others - second hand |
| 2BF110S0BCL | others - minute hand |
| 1BX080F0BAL | others - hour hand |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| EG0060B01 | others - button gasket |
| 0351651 | others - winding stem |
| 5M420A9075Z | others - case |
| 5M420A90 | others - case back |
| 0866640 | others - holding ring for dial |
| 0878729 | others - date dial |
| 5M420B58XE14 | others - dial |
| 5M425 | others - machine code |
| A170BS | others - push pin |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 5M42
