The Seiko 2A23-0440 is a watch model based on the 2A23 movement.
Parts List
| 190W79FR | crystal |
| 190W79FR02 | crystal |
| 190W79FR01 | crystal |
| 45E83NG1 | crown |
| 0E240BA9 | case back gasket |
| 0G220BA21 | case back gasket - rotating bezel gasket |
| 0E240BA91 | case back gasket |
| FE208BAA1 | case back gasket |
| 86580855 | crystal gasket |
| 89950590 | band - other |
| B5392H | band - metal band |
| B5392H-LKG | band - link |
| B5392L | band - metal band |
| B5392L-LKS | band - link |
| B5392L-PB1 | clasp - parts for buckle/clasp |
| B5392L-BK2S | clasp - clasp |
| B5392H-PB1 | clasp - parts for buckle/clasp |
| B5392H-BK2G | clasp - clasp |
| 3AX075F3AKC | hand - second hand |
| 07S69ZGH | hand - hour hand |
| 07S69ZGM | hand - minute hand |
| 07S69ZSH | hand - hour hand |
| 07S69ZSM | hand - minute hand |
| 07SC53PN | hand - second hand |
| A100BS | others - push pin (for mb) |
| 82700530 | others - case ring |
| 81504751 | others - screw |
| 81504759 | others - screw |
| 82360455 | others - bezel |
| 82360456 | others - bezel |
| 86011975 | others - rotating bezel |
| 86011976 | others - rotating bezel |
| 0801121 | others - date dial |
| 0801301 | others - date dial |
| 0884141 | others - holding ring for dial |
| 2A230440PN | others - case |
| 2A230440YE | others - case |
| 2A23066LXB19 | others - dial |
| 2A23066LXB29 | others - dial |
| 2A2310 | others - machine code |
| 0D014BA11 | others - crown and stem gasket |
| 07SC53PG | others - second hand |
| 3AX075F3AP2 | others - second hand |
Caliber 2A23
