The Seiko 2P20-001B is a watch model based on the 2P20 movement.
Parts List
| 175W09HV01 | crystal |
| 30M27NA1 | crown |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 0F140BAA1 | case back gasket |
| 86567330 | crystal gasket - plastic gasket for crystal |
| 86564490 | bezel gasket - plastic gasket for bezel |
| G5055D | band - metal band |
| G5055D-LKG | band - link |
| G5055D-BK4G | clasp - clasp |
| A110AS | others - push pin |
| 07Y07DGH | others - hour hand |
| 2P20001BT7 | others - case |
| 2P200200XS14 | others - dial |
| 82331377 | others - bezel |
| 82732390 | others - case ring |
| 07Y07DGM | others - minute hand |
Caliber 2P20
