The Seiko 1F21-5A6A is a watch model based on the 1F21 movement.
Parts List
| SABW30SN01 | crystal - crystal |
| 30M58NA1 | crown - crown |
| 0A1900B01 | case back gasket - gasket |
| DK32D | band - band |
| 06T04CGM | others - minute hand |
| 07T04ABH | others - hour hand |
| A130AS | others - push pin (for lb) |
| 1F211B70XG24 | others - dial |
| 1F219 | others - machine code |
| 87020460 | others - back plate |
| 82821240 | others - case ring |
| 1F215A6ASJ | others - case |
| 1F215A6A | others - case back |
| 07SC06DG | others - second hand |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |