The Seiko 2P20-5990 is a watch model based on the 2P20 movement.
Parts List
| ET4N31JN01 | crystal |
| 30N99NA1 | crown - crown |
| 0G1600B01 | case back gasket - case back gasket |
| TT22A | band - metal band |
| TT23A | band - metal band |
| 81606439 | others - bracelet fixing pin |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 2P2015 | others - machine code |
| 2P201740XG14 | others - dial |
| 2P201740XS14 | others - dial |
| 2P20599025 | others - case |
| 2P2059902N | others - case |
| 82813730 | others - case ring |
| DZ0040B01 | others - crown and stem gasket |
| 0351236 | others - winding stem |
| 05Y13DGM | others - minute hand |
| 05Y13DGH | others - hour hand |
Caliber 2P20
