The Seiko 2P20-0640 is a watch model based on the 2P20 movement.
Parts List
| 175A02SN01 | crystal |
| 175N15SN01 | crystal |
| 25N49DE5 | crown - crown |
| 0G1700B01 | case back gasket |
| MK12E | band - leather band |
| 2P20064043A | others - case |
| 2P202460XA15 | others - dial |
| 2P207 | others - machine code |
| 82830310 | others - case ring |
| A100AS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 0351236 | others - winding stem |
| 06Y49JGH | others - hour hand |
| 06Y49JGM | others - minute hand |
| 1CC042LABDG | others - hour hand |
| 2CC060LABDG | others - minute hand |
Caliber 2P20
