The Seiko 2P20-5G80 is a watch model based on the 2P20 movement.
Parts List
| SAEN40JM | crystal |
| SAEN40JM01 | crystal |
| 30M98NA1 | crown |
| 0H1720N0 | case back gasket |
| 0H1720N01 | case back gasket - case back gasket |
| DZ0041B0 | case back gasket |
| B5395G | band - metal band |
| B5396G | band - metal band |
| B5396G-BK3G | clasp - clasp |
| B5395G-BK3G | clasp - clasp |
| 0351236 | others - winding stem |
| T060BS | others - push pin |
| 2P201B50XB14 | others - dial |
| 2P201B50XG14 | others - dial |
| 2P201B60X984 | others - dial |
| 2P201B60X994 | others - dial |
| 2P205G80 | others - case back |
| 2P205G8025 | others - case |
| 2P209 | others - machine code |
| 82803580 | others - case ring |
| DZ0041B01 | others - crown and stem gasket |
| 05Y24NGM | others - minute hand |
| 2CE055L0BDG | others - minute hand |
| 05Y10DGM | others - minute hand |
| 05Y10DGH | others - hour hand |
| 1CA035A0BNG | others - (24 hour hand) |
| 05Y02NGH | others - hour hand |
Caliber 2P20
