The Seiko 5Y23-8080 is a watch model based on the 5Y23 movement.
Parts List
| 290W36GN | crystal |
| 290W36GN00 | crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| FH2981B01 | case back gasket - case back gasket |
| FH2981B0 | case back gasket |
| 86581340 | crystal gasket |
| 86179411 | bezel gasket - plastic gasket for bezel |
| B1650G | band |
| B1650C | band |
| 0351670 | others - winding stem |
| 13SC04A2 | others - second hand |
| 12TA0LGM | others - minute hand |
| 0Z0060B01 | others - crown and stem gasket |
| 12T02FGM | others - minute hand |
| 12TA0LGH | others - hour hand |
| 12T16AGH | others - hour hand |