The Seiko 2P20-0120 is a watch model based on the 2P20 movement.
Parts List
| 195N45JV01 | crystal |
| 35MF7NG1 | crown |
| 35MF7NA1 | crown |
| 0G1820B01 | case back gasket |
| BHA25D | band - leather band |
| BHZ25G | band - leather band |
| BHZ26D | band - leather band |
| DK27C | band - leather band |
| DK28C | band - leather band |
| DK30C | band - leather band |
| 07Y15DGH | hand - hour hand |
| 07Y15DGM | hand - minute hand |
| 2P200120 | others - case back |
| 2P20012025 | others - case |
| 2P200120HE | others - case |
| 2P200690XB14 | others - dial |
| 2P200690XY14 | others - dial |
| 2P200700XY14 | others - dial |
| 2P201600XB14 | others - dial |
| 2P201600XY14 | others - dial |
| 2P201610XY14 | others - dial |
| 82801410 | others - case ring |
| A120AS | others - push pin |
| 0351236 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
Caliber 2P20
