The Seiko 3M22-0B50 is a watch model based on the 3M22 movement.
Parts List
| 240A02SN02 | crystal - crystal (sapphire) |
| 240A02SN | crystal |
| 8M40A0NNG1 | crown - crown |
| 8M40A0NN | crown |
| FH2580B01 | case back gasket |
| 80601221 | pusher |
| 4ER4KB | band - band |
| 4ER5KB | band - band |
| 2AB085A4BFN | others - minute hand |
| 1AB055A4BFN | others - hour hand |
| 3AA125F1ANG | others - second hand |
| A110BS | others - push pin (for mb) |
| 0878696 | others - date dial |
| 3M220C68XS24 | others - dial |
| 3M220C78XE14 | others - dial |
| 3M222 | others - machine code |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| 0351550 | others - winding stem |
| EG0060B01 | others - button gasket |
| 82835760 | others - case ring |
| 3M220B5075Z | others - case |
| 3M220B50 | others - case back |
| AD006BA1 | others - crown gasket |
| AD006BA12 | others - crown gasket |
| 2AD095AMBAA | others - minute hand |
| 1AD065AMBAA | others - hour hand |
Caliber 3M22
