The Seiko 2P20-5J10 is a watch model based on the 2P20 movement.
Parts List
| ESHN28JN01 | crystal |
| ESHN28JN | crystal |
| 30M98NA1 | crown |
| 0H1860N01 | case back gasket - case back gasket |
| 0H1860N0 | case back gasket |
| DZ0041B0 | case back gasket |
| BJJ45G | band - leather band |
| BJJ46G | band - leather band |
| BJJ47G | band - leather band |
| 06Y30NBH | hand - hour hand |
| 06Y30NBM | hand - minute hand |
| A130AS | others - push pin (for lb) |
| 2P201D50XG14 | others - dial |
| 2P201D60XN14 | others - dial |
| 2P201D60XY14 | others - dial |
| 2P201J40XS19 | others - dial |
| 2P205J10 | others - case back |
| 2P205J1025 | others - case |
| 2P209 | others - machine code |
| 82802120 | others - case ring |
| 0351236 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 06Y26NGM | others - minute hand |
| 05Y18NGH | others - hour hand |
Caliber 2P20
