The Seiko 2P21-5010 is a watch model based on the 2P21 movement.
Parts List
| SAFN47JN01 | crystal |
| SAFN47JN | crystal |
| 30N63NS1 | crown |
| 30N63NA1 | crown - crown |
| 30ND3NA1 | crown - crown |
| 30ND3NS1 | crown |
| 0G1600B01 | case back gasket - case back gasket |
| 0G1650B01 | case back gasket - case back gasket |
| 0G1600B0 | case back gasket |
| 0G1650B0 | case back gasket |
| N5010G | band - metal band |
| N5010S | band - metal band |
| N5010S-BK3S | clasp - clasp |
| N5010G-BK3G | clasp - clasp |
| 06S11DZH | hand - hour hand |
| 06S11DZM | hand - minute hand |
| 06S25DGH | hand - hour hand |
| 06S25DGM | hand - minute hand |
| 2BA050A1BDS | hand - minute hand |
| 2BA055A1BDS | hand - minute hand |
| 3BA075F1BNG | others - second hand |
| 3BA075F1BNS | others - second hand |
| 2BG055LABDG | others - minute hand |
| 1BG037LABDG | others - hour hand |
| 1BA037A1BNS | others - hour hand |
| 06SC15NG | others - second hand |
| 06SC15NS | others - second hand |
| 2P210030XS13 | others - dial |
| 2P210040XS14 | others - dial |
| 2P21501025 | others - case |
| 2P2150102E | others - case |
| 2P219 | others - machine code |
| 82731770 | others - case ring |
| B080AS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
Caliber 2P21
