The Seiko 2A23-0040 is a watch model based on the 2A23 movement.
Parts List
| 195W57LN00 | crystal |
| 32M13NS1 | crown |
| 32M13NA1 | crown |
| 0F155BAA1 | case back gasket - case back gasket |
| EB0055B01 | others - crown and stem gasket |
Caliber 2A23
Seiko 2A23-0040 Watch Guide