The Seiko 1F21-5C00 is a watch model based on the 1F21 movement.
Parts List
| RE1A18SZ0C | crystal - crystal |
| RE1A18SZ0D | crystal - crystal |
| 30MA2NA1 | crown - crown |
| 30MA2NB1 | crown - crown |
| 0F180NA1S | case back gasket - case back gasket |
| D0N4CG-LK00 | band - link |
| D0N4CG | band - band |
| WP26BW | band - band |
| DAW2AW | band - band |
| 1BF035A1BNG | others - hour hand |
| 2BA052A1BNG | others - minute hand |
| 2BF052A1BNG | others - minute hand |
| 1BA035A1BNG | others - hour hand |
| 3BA075F1BNG | others - second hand |
| 0351807 | others - winding stem |
| 82836120 | others - case ring |
| 1F211F20XS14 | others - dial |
| 1F211H10XS14 | others - dial |
| 1F211K00XG19 | others - dial |
| 1F215 | others - machine code |
| A120AS | others - push pin |
| 1F215C0075 | others - case |
| 1F215C00 | others - case back |
| 1F215C007H | others - case |
| 1F215C007N | others - case |
| EZ0035B01 | others - crown and stem gasket |