The Seiko 2P21-5D00 is a watch model based on the 2P21 movement.
Parts List
| K03N28JM01 | crystal |
| 30M98NA1 | crown |
| 0H1610N01 | case back gasket |
| TT24A | band - metal band |
| 07SC02NG | others - second hand |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 2P210H90XG14 | others - dial |
| 2P215D00 | others - case back |
| 2P215D002N | others - case |
| 2P219 | others - machine code |
| 82811269 | others - case ring |
| 0351236 | others - winding stem |
| 06T48DGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 05T18DGM | others - minute hand |
| 05T18DGH | others - hour hand |
Caliber 2P21
