The Seiko 2P20-5120 is a watch model based on the 2P20 movement.
Parts List
| SA4W53HV01 | crystal |
| 30M27NA1 | crown |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 0F180BA11 | case back gasket |
| 0F180BAA1 | case back gasket - case back gasket |
| 86572910 | crystal gasket - plastic gasket for crystal |
| G5054C | band - metal band |
| 86204551 | band - other |
| G5054C-LKG | band - link |
| G5054C-PB1 | clasp - parts for buckle/clasp |
| G5054C-BK2S | clasp - clasp |
| 1CE045L2BDG | others - hour hand |
| 2CE065L2BDG | others - minute hand |
| 2P200240XG14 | others - dial |
| 2P205120PJ | others - case |
| 82731890 | others - case ring |
| 84307375 | others - dial ring |
| A120AS | others - push pin |
| 06Y11DGM | others - minute hand |
| 06Y11DGH | others - hour hand |
Caliber 2P20
