The Seiko 2A22-0400 is a watch model based on the 2A22 movement.
Parts List
| 190W81HR | crystal |
| 190W81HR01 | crystal - crystal |
| 32M49NG1 | crown |
| 0F155BAA | case back gasket |
| 0F155BAA1 | case back gasket - case back gasket |
| 86564110 | crystal gasket - plastic gasket for crystal |
| 86581290 | bezel gasket - plastic gasket for bezel |
| 86205091 | band - other |
| B5391D | band - metal band |
| B5391D-LKG | band - link |
| B5391D-BK4G | clasp - clasp |
| 3BA075F1BNG | others - second hand |
| 07SC43NG | others - second hand |
| 08S55DGH | others - hour hand |
| 08S55DGM | others - minute hand |
| 82800830 | others - case ring |
| 81606439 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| EB0055B01 | others - crown and stem gasket |
| B5391D-EP3 | others - endpiece |
| 82332055 | others - bezel |
| 2A220400PS | others - case |
| 2A220860XB14 | others - dial |
| 2A2210 | others - machine code |
| EB0055B0 | others - crown gasket |
Caliber 2A22
