The Seiko 1F21-5A70 is a watch model based on the 1F21 movement.
Parts List
| SABW36SN01 | crystal |
| 30MA2NA1 | crown - crown |
| 0A1800B01 | case back gasket |
| DK33D | band - band |
| 06TC2ACM | hand - minute hand |
| 07SC02NG | others - second hand |
| 06TC2AGH | others - hour hand |
| 0351807 | others - winding stem |
| 1F210C40XG14 | others - dial |
| 1F215A70 | others - case back |
| 1F215A7075 | others - case |
| 1F219 | others - machine code |
| 87020460 | others - back plate |
| A120AS | others - push pin |
| 82821860 | others - case ring |
| EZ0035B01 | others - crown and stem gasket |
| 06TC2AGM | others - minute hand |