The Seiko 1F21-0G00 is a watch model based on the 1F21 movement.
Parts List
| 170W08SN02 | crystal |
| 6K30A0SNG1 | crown |
| 0A1700N01 | case back gasket - case back gasket |
| MK43F | band - leather band |
| 1BH045A0BNG | others - hour hand |
| 82822840 | others - case ring |
| 1F210G00 | others - case back |
| 1F210G007L | others - case |
| 1F210K01XS14 | others - dial |
| 1F215 | others - machine code |
| A110AS | others - push pin |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 2BH070A0BNG | others - minute hand |
| 3BA080F0BNG | others - second hand |