The Seiko 5H23-6B90 is a watch model based on the 5H23 movement.
Parts List
| 270WA4SK01 | crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 0A2600B01 | case back gasket |
| GB58A | band - metal band |
| GB59A | band - metal band |
| 0351670 | others - winding stem |
| 82802420 | others - case ring |
| 0801774 | others - date dial |
| 5H236B50XS1Z | others - dial |
| 5H236B60XS1Z | others - dial |
| 5H236B90 | others - case back |
| 5H236B9061 | others - case |
| 5H236B906Y | others - case |
| 5H238 | others - machine code |
| A170BS | others - push pin |
| 12T10DAH | others - hour hand |
| 11T12AAH | others - hour hand |
| 11T12AAM | others - minute hand |
| 13SC04TL | others - second hand |
| 11T20DAM | others - minute hand |
| 0Z0060B01 | others - crown and stem gasket |
| 13SC04TA | others - second hand |
Caliber 5H23
