The Seiko 2P20-0240 is a watch model based on the 2P20 movement.
Parts List
| 175N23JN01 | crystal |
| 30NE3NA1 | crown |
| 0H1700B01 | case back gasket - bezel gasket |
| 0H1750B01 | case back gasket |
| 86581570 | crystal gasket |
| MK39C | band - leather band |
| 82802370 | others - case ring |
| 2P20024025 | others - case |
| 2P200950XB14 | others - dial |
| A120AS | others - push pin |
| 07Y07DGH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351236 | others - winding stem |
| 07Y07DGM | others - minute hand |
Caliber 2P20
