The Seiko 5M23-6A21 is a watch model based on the 5M23 movement.
Parts List
| 300P08SB02 | crystal - crystal |
| 1E60A0SNW1 | crown - crown |
| 86400289 | crystal gasket - crystal fixing ring |
| EP296BAA2 | crystal gasket - crystal gasket |
| 80604329 | pusher - button |
| QB68A | band - band |
| 1AB080A8BES | others - hour hand |
| 2AB110A6BE1 | others - minute hand |
| 3AX125F8AEE | others - second hand |
| 0C2600B01 | others - gasket |
| 81400709 | others - button spring clip |
| 81350460 | others - button spring |
| EB0100B01 | others - button gasket |
| 0351651 | others - winding stem |
| 0Z3444B02 | others - rotating bezel gasket |
| 5M236A2161 | others - case |
| 86318505 | others - rotating bezel |
| 81400969 | others - button spring clip |
| 0866629 | others - holding ring for dial |
| 0878675 | others - date dial |
| 5M236A40XB13 | others - dial |
| 5M237 | others - machine code |
| 81350180 | others - click spring |
| 84324043 | others - dial ring |
| 89999903 | others - click ball |
| C190FS | others - push pin |
| 0A0150B0A | others - crown and stem gasket |
| 89995390 | others - pusher spacer |