The Seiko 2P20-5720 is a watch model based on the 2P20 movement.
Parts List
| ET2N21JN | crystal |
| ET2N21JN01 | crystal |
| 30NA9NA1 | crown |
| 0F140NA11 | case back gasket |
| 0F140NA1 | case back gasket |
| DA007BA1 | case back gasket |
| Z5223G | band - metal band |
| Z5223S | band - metal band |
| Z5223G-BK3G | clasp - clasp |
| 05Y17DGH | others - hour hand |
| DA007BA11 | others - crown and stem gasket |
| 05Y17DGM | others - minute hand |
| 2P201340XB14 | others - dial |
| 2P201340XG14 | others - dial |
| 2P201350XS19 | others - dial |
| 2P205720 | others - case back |
| 2P20572025 | others - case |
| 2P2057202N | others - case |
| 82810050 | others - case ring |
| B090AS | others - push pin |
| 05Y13DGM | others - minute hand |
| 05Y13DGH | others - hour hand |
Caliber 2P20
