The Seiko 2P20-0100 is a watch model based on the 2P20 movement.
Parts List
| 170A02JN02 | crystal - crystal |
| 170N51JN01 | crystal |
| 30N63NA1 | crown - crown |
| 30ND3NA1 | crown - crown |
| 0G1650B01 | case back gasket - case back gasket |
| 0G1600B01 | case back gasket - case back gasket |
| M5040G | band - metal band |
| M5040G-BK3G | clasp - clasp |
| 06Y17DCH | hand - hour hand |
| 1CE032LABDG | others - hour hand |
| 2CE050L2BDG | others - minute hand |
| DZ0040B01 | others - crown and stem gasket |
| 2P200100 | others - case back |
| 2P20010025 | others - case |
| 2P200590XB14 | others - dial |
| 2P200600XG14 | others - dial |
| 82801970 | others - case ring |
| 05Y03DGM | others - minute hand |
| 06Y17DCM | others - minute hand |
| 05Y03DGH | others - hour hand |
Caliber 2P20
