The Seiko 5Y23-6040 is a watch model based on the 5Y23 movement.
Parts List
| 275W34LM01 | crystal |
| 275W34LN01 | crystal |
| 35M82NA1 | crown - crown |
| 0A2600N01 | case back gasket - case back gasket |
| 86574201 | crystal gasket |
| G1351G | band |
| 0351670 | others - winding stem |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 11T12ALH | others - hour hand |
| 11T12ALM | others - minute hand |