The Seiko 1F21-0050 is a watch model based on the 1F21 movement.
Parts List
| 200WC7SN02 | crystal - crystal |
| 40M0CNA6 | crown |
| 40M0CNK1 | crown - crown |
| 40N0CNA6 | crown |
| 0F170BAA3 | case back gasket - case back gasket |
| DAT9BW | band - band |
| DAV2AW | band - band |
| DAV5BB | band - leather band |
| DAV4AB | band - leather band |
| 1BA055A1BAM | others - hour hand |
| 2BA082A1BAM | others - minute hand |
| 3BA090F1BA6 | others - second hand |
| A120BS | others - push pin (for lb) |
| 1F210070XS14 | others - dial |
| 1F210070XS24 | others - dial |
| 1F215 | others - machine code |
| 1F21005071A | others - case |
| 82870230 | others - case ring |
| 1F210050 | others - case back |
| 0351807 | others - winding stem |
| 1F21005075A | others - case |
| DZ0040B01 | others - crown and stem gasket |