The Seiko 5M42-0A50 is a watch model based on the 5M42 movement.
Parts List
| 290A02SN02 | crystal - crystal (sapphire) |
| 290A02SN | crystal |
| 45MA2NJ1 | crown |
| 45MA2NA1 | crown - crown |
| FH2981B01 | case back gasket - case back gasket |
| 80602521 | pusher - button |
| 80602529 | pusher - button |
| 43K2AZ | band - band |
| 43K2LZ | band - band |
| 43K2JZ | band - band |
| 43K2AZ-LKS | band - link |
| 43K2JZ-LKS | band - link |
| 43K2LZ-LKG | band - link |
| 43K2LZ-BK2G | clasp - buckle |
| 43K2LZ-PB1 | clasp - parts for buckle |
| 43K2JZ-BK2S | clasp - buckle |
| 43K2JZ-PB1 | clasp - parts for buckle |
| 43K2AZ-BK1S | clasp - buckle |
| 43K2AZ-PB1 | clasp - parts for buckle |
| 3AA125F0ANG | others - second hand |
| 2AB120A2BAA | others - minute hand |
| 2AB120A2BAJ | others - minute hand |
| 1AB080A4BAA | others - hour hand |
| 1AB080A4BAL | others - hour hand |
| 81604259 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| EG0060B01 | others - button gasket |
| 0351651 | others - winding stem |
| 5M420A5061Z | others - case |
| 5M420A5098Z | others - case |
| 0866640 | others - holding ring for dial |
| 0878729 | others - date dial |
| 5M420A5061 | others - case |
| 5M420A50 | others - case back |
| 5M420B10XS14 | others - dial |
| 5M420B18XL14 | others - dial |
| 5M420B18XS14 | others - dial |
| 5M425 | others - machine code |
| 0Z0060B01 | others - crown and stem gasket |
| 12C86AGM | others - minute hand |
| 12C86AGH | others - hour hand |
Caliber 5M42
