The Seiko 2P20-5A50 is a watch model based on the 2P20 movement.
Parts List
| RE2N44GN00 | crystal |
| RE2N44GN | crystal |
| 30M98NA1 | crown |
| 0H1970N01 | case back gasket - case back gasket |
| DZ0041B0 | case back gasket |
| 0H1970N0 | case back gasket |
| B5322G | band - metal band |
| B5322G-LKG | band - link |
| B5322G-BK4G | clasp - clasp |
| 0351236 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 2P200B10XG14 | others - dial |
| 2P200D90XA15 | others - dial |
| 2P200D90XA25 | others - dial |
| 2P205A5025 | others - case |
| 2P209 | others - machine code |
| 82800940 | others - case ring |
| DZ0041B01 | others - crown and stem gasket |
| 2CE055L0BDG | others - minute hand |
| 05Y10DGM | others - minute hand |
| 05Y10DGH | others - hour hand |
Caliber 2P20
