The Seiko 5C23-8020 is a watch model based on the 5C23 movement.
Parts List
| 295W28GN00 | crystal |
| 40M92NA1 | crown |
| 35MC8NA1 | crown |
| 35MC8NS1 | crown - crown |
| 40M92NS1 | crown - crown |
| FH2981B01 | case back gasket - case back gasket |
| 86572421 | crystal gasket |
| 86178750 | bezel gasket - plastic gasket for bezel |
| Z1288G | band - metal band |
| Z1288G-LKG | band - link |
| Z1288S | band - metal band |
| Z1288G-PB1 | clasp - parts for buckle/clasp |
| Z1288G-BK1G | clasp - clasp |
| 12T32BGH | hand - hour hand |
| 12T32BGM | hand - minute hand |
| 12T32MGH | hand - hour hand |
| 12T32MGM | hand - minute hand |
| 08B36NG | others - sub hand |
| 08B36NS | others - sub hand |
| 82334921 | others - bezel |
| 0801635 | others - date dial |
| 0866526 | others - holding ring for dial |
| 0354856 | others - winding stem |
| 0354800 | others - winding stem |
| 82730600 | others - case ring |
| 82334929 | others - bezel |
| 5C23802061 | others - case |
| 5C23802075 | others - case |
| 5C23802098 | others - case |
| 5C23804LXB14 | others - dial |
| 5C23804LXG18 | others - dial |
| 5C23804LXS17 | others - dial |
| 5C239 | others - machine code |
| A180BS | others - push pin |
| 13SC04A2 | others - second hand |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 12T32MSM | others - minute hand |
| 12T32MSH | others - hour hand |
Caliber 5C23
Other models with the same movement
| 5C23-5000 |
| 5C23-5009 |
| 5C23-5010 |
| 5C23-5020 |
| 5C23-5030 |
| 5C23-503A |
| 5C23-6000 |
| 5C23-600A |
| 5C23-6010 |
| 5C23-6020 |
| 5C23-7000 |
| 5C23-7009 |
| 5C23-7010 |
| 5C23-7019 |
| 5C23-7020 |
| 5C23-7030 |
| 5C23-8000 |
| 5C23-8009 |
| 5C23-8019 |
| 5C23-8030 |
| 5C23-8040 |