The Seiko 2P21-0C00 is a watch model based on the 2P21 movement.
Parts List
| 185W02GN00 | crystal |
| 30MA2NA1 | crown - crown |
| 30MA2NS1 | crown - crown |
| 0A1800N01 | case back gasket |
| 86567380 | crystal gasket - plastic gasket for crystal |
| ZB06A | band - band |
| ZB07A | band - metal band |
| ZB08A | band - metal band |
| 07SC02NG | others - second hand |
| 08T08DGH | others - hour hand |
| 08T08DGM | others - minute hand |
| 81180229 | others - bracelet fixing pipe |
| 81180249 | others - bracelet fixing pipe |
| 82801760 | others - case ring |
| 2P210C007E | others - case |
| 81010569 | others - bracelet fixing pipe |
| 81604169 | others - bracelet fixing pin |
| 2P210C00 | others - case back |
| 2P210C0075 | others - case |
| 2P210C007N | others - case |
| 2P210H50XG14 | others - dial |
| 2P210H50XS14 | others - dial |
| 2P210H60XS14 | others - dial |
| 2P211A60XS14 | others - dial |
| 2P219 | others - machine code |
| 0351236 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 07TB6NAH | others - hour hand |
| 07TB6NAM | others - minute hand |
Caliber 2P21
