The Seiko 2A23-0450 is a watch model based on the 2A23 movement.
Parts List
| 190W79FR | crystal |
| 190W79FR02 | crystal |
| 45E83NA1 | crown |
| 0E240BA9 | case back gasket |
| 0G220BA21 | case back gasket - rotating bezel gasket |
| FE208BAA1 | case back gasket |
| 0E240BA91 | case back gasket |
| 86580855 | crystal gasket |
| B5392M-LKG | band - link |
| 89950590 | band - other |
| B5392F | band - metal band |
| B5392F-LKG | band - link |
| B5392M | band - metal band |
| B5392M-BK2G | clasp - clasp |
| B5392F-PB1 | clasp - parts for buckle/clasp |
| B5392F-BK2G | clasp - clasp |
| B5392M-PB1 | clasp - parts for buckle/clasp |
| A100BS | others - push pin (for mb) |
| 0801298 | others - date dial |
| 0884141 | others - holding ring for dial |
| 2A230450XE | others - case |
| 2A230450XH | others - case |
| 2A23066LXG19 | others - dial |
| 2A2310 | others - machine code |
| 81504751 | others - screw |
| 82360457 | others - bezel |
| 82360458 | others - bezel |
| 86011995 | others - rotating bezel |
| 86011996 | others - rotating bezel |
| 0D014BA11 | others - crown and stem gasket |
| 82700530 | others - case ring |
| 3AX075F3AP3 | others - second hand |
| 07SC53PB | others - second hand |
| 07S69BGM | others - minute hand |
| 07S69BGH | others - hour hand |
Caliber 2A23
