The Seiko 1F21-0G30 is a watch model based on the 1F21 movement.
Parts List
| 190W48SK01 | crystal |
| 35M1NNS1 | crown |
| 0A1900N0A | case back gasket |
| 86581860 | crystal gasket - plastic gasket for crystal |
| ZB40A | band - metal band |
| 3BA080F0BNA | hand - second hand |
| A120BS | others - push pin (for lb) |
| 1F210G30 | others - case back |
| 1F210G3061 | others - case |
| 1F210K40XS1Z | others - dial |
| 1F215 | others - machine code |
| 87020460 | others - back plate |
| 82820780 | others - case ring |
| 1BG055L0BDA | others - hour hand |
| 0351807 | others - winding stem |
| 2BG080L0BDA | others - minute hand |