The Seiko 1F21-5D00 is a watch model based on the 1F21 movement.
Parts List
| RE1A76SR02 | crystal - crystal |
| 6M40A4SNG1 | crown - crown |
| 6M40A4SNW1 | crown - crown |
| 0F170NA1S | case back gasket - case back gasket |
| DB98BW | band - band |
| DC00AW | band - band |
| 3BA075F1BA6 | others - second hand |
| 3BA075F1BNG | others - second hand |
| 1BH037A1BAL | others - hour hand |
| 2BH052A1BAL | others - minute hand |
| 2BH052A1BNG | others - minute hand |
| A100BS | others - push pin (for mb) |
| 1F211H20XG19 | others - dial |
| 1F211H30X914 | others - dial |
| 1F215 | others - machine code |
| 1F215D0075 | others - case |
| 82835340 | others - case ring |
| 1F215D00 | others - case back |
| 1F215D0075A | others - case |
| 1F215D0079 | others - case |
| 0351807 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 1BH037A1BNG | others - hour hand |