The Seiko 2P21-5C10 is a watch model based on the 2P21 movement.
Parts List
| ESHN12JN01 | crystal |
| 30M98NA1 | crown |
| 0H1860N01 | case back gasket - case back gasket |
| BHJ43G | band - leather band |
| BHJ44G | band - leather band |
| BHZ42G | band - leather band |
| 07SC02NG | others - second hand |
| 2P210E50XG14 | others - dial |
| 2P210E60X994 | others - dial |
| 2P210E70XN14 | others - dial |
| 2P215C10 | others - case back |
| 2P215C1025 | others - case |
| 2P219 | others - machine code |
| 82803840 | others - case ring |
| A120AS | others - push pin |
| 0351236 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 06T04NGM | others - minute hand |
| 2BE065L0BDG | others - minute hand |
| 07T04NGH | others - hour hand |
| 06T36DGM | others - minute hand |
| 1BE045L0BDG | others - hour hand |
| 06T36DGH | others - hour hand |
| ESHN12JN01 | crystal |
| 30M98NA1 | crown |
| 0H1860N01 | case back gasket - case back gasket |
| BHJ43G | band - leather band |
| BHJ44G | band - leather band |
| BHZ42G | band - leather band |
| 07SC02NG | others - second hand |
| 2P210E50XG14 | others - dial |
| 2P210E60X994 | others - dial |
| 2P210E70XN14 | others - dial |
| 2P215C10 | others - case back |
| 2P215C1025 | others - case |
| 2P219 | others - machine code |
| 82803840 | others - case ring |
| A120AS | others - push pin |
| 0351236 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 06T04NGM | others - minute hand |
| 2BE065L0BDG | others - minute hand |
| 07T04NGH | others - hour hand |
| 06T36DGM | others - minute hand |
| 1BE045L0BDG | others - hour hand |
| 06T36DGH | others - hour hand |
Caliber 2P21
