The Seiko 8N20-5000 is a watch model based on the 8N20 movement.
Parts List
| RE3W21SC01 | crystal |
| 25M31NA1 | crown |
| 0F260BAA3 | case back gasket - case back gasket |
| WPA51 | band - band |
| 82840650 | others - case ring |
| 8N205000XB14 | others - dial |
| 8N205000XJ | others - case |
| 8N2063 | others - machine code |
| A180BS | others - push pin |
| 09T253GH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351387 | others - winding stem |
| 09T253GM | others - minute hand |
Caliber 8N20
Other models with the same movement
| 8N20-5019 |
| 8N20-5020 |
| 8N20-6000 |
| 8N20-6001 |
| 8N20-6010 |
| 8N20-6020 |
| 8N20-6030 |
| 8N20-603A |
| 8N20-6040 |
| 8N20-6070 |
| 8N20-6080 |
| 8N20-6099 |
| 8N20-6100 |
| 8N20-6110 |
| 8N20-6120 |
| 8N20-6130 |
| 8N20-6140 |
| 8N20-7000 |
| 8N20-700A |
| 8N20-8009 |