The Seiko 2A22-0420 is a watch model based on the 2A22 movement.
Parts List
| 200P01HN03 | crystal |
| 200W77HN00 | crystal |
| 35M77NA1 | crown |
| 0F160BAA2 | case back gasket |
| 86582790 | crystal gasket - plastic gasket for crystal |
| HK28B | band - leather band |
| HK29B | band - leather band |
| HK60B | band - leather band |
| 3BA075F1BNG | others - second hand |
| 3BA125F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| EB0055B01 | others - crown and stem gasket |
| 0354073 | others - winding stem |
| 82701890 | others - case ring |
| 0801120 | others - date dial |
| 0801300 | others - date dial |
| 0884142 | others - holding ring for dial |
| 2A22042075 | others - case |
| 2A220880XG19 | others - dial |
| 2A220880XS19 | others - dial |
| 2A220960XS19 | others - dial |
| 2A2210 | others - machine code |
| A120AS | others - push pin |
| 07SC51NG | others - second hand |
| 08S23AAH | others - hour hand |
| 08S23AAM | others - minute hand |
| 08S23AGH | others - hour hand |
| 08S23AGM | others - minute hand |
| 08S59AFH | others - hour hand |
| 08S59AFM | others - minute hand |
Caliber 2A22
