The Seiko 5M22-8A20 is a watch model based on the 5M22 movement.
Parts List
| 300A06JR02 | crystal |
| 300A06JR | crystal |
| 8M45A2SBW1 | crown - crown |
| 8M45A2SB | crown |
| FH2981B01 | case back gasket - case back gasket |
| Z1684S | band |
| Z1684S-LKS | band - link |
| Z1684S-PB1 | clasp - parts for buckle/clasp |
| Z1684S-BK2S | clasp - clasp |
| 81601169 | others - bracelet fixing pin |
| 81180189 | others - bracelet fixing pipe |
| 0801954 | others - date dial |
| 0866625 | others - holding ring for dial |
| 0878538 | others - date dial |
| 5M222 | others - machine code |
| 5M228A10XL13 | others - dial |
| 5M228A10XS13 | others - dial |
| 5M228A20 | others - case back |
| 5M228A2061 | others - case |
| 0351651 | others - winding stem |
| 12ST20TS | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 2BB125L2BCC | others - minute hand |
| 2BB125L2BCK | others - minute hand |
| 1BB080L0BCK | others - hour hand |
| 1BB080L0BCC | others - hour hand |