The Seiko 5H23-7C90 is a watch model based on the 5H23 movement.
Parts List
| 280W22HM | crystal |
| 280W22HM01 | crystal |
| 40M78NA1 | crown - crown |
| FH2882B0A | case back gasket - case back gasket |
| FH2882B0 | case back gasket |
| 8617-7922 | crystal gasket |
| 86177922 | crystal gasket - plastic gasket for crystal |
| Z1408S | band - metal band |
| Z1408S-LKS | band - link |
| Z1408S-PB1 | clasp - parts for buckle/clasp |
| Z1408S-BK1S | clasp - clasp |
| A100BS | others - push pin (for mb) |
| 0801722 | others - date dial |
| 0866557 | others - holding ring for dial |
| 5H237C90 | others - case back |
| 5H237C90X2 | others - case |
| 5H237D40X984 | others - dial |
| 5H237D40X994 | others - dial |
| 5H238 | others - machine code |
| 0351670 | others - winding stem |
| 82800261 | others - case ring |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 11T16NGM | others - minute hand |
| 11T16NGH | others - hour hand |
Caliber 5H23
