The Seiko 5Y23-8070 is a watch model based on the 5Y23 movement.
Parts List
| 290WA2LM01 | crystal |
| 290WA2LM | crystal |
| 35M82NA1 | crown - crown |
| 0A2700B01 | case back gasket - gasket |
| 0H2700B0 | case back gasket |
| 86574980 | crystal gasket - crystal gasket |
| G1391C | band |
| 0351672 | others - winding stem |
| 12T40AGM | others - minute hand |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 1BD085A0BAA | others - hour hand |
| 12T40AGH | others - hour hand |