The Seiko 1F21-0AR0 is a watch model based on the 1F21 movement.
Parts List
| RE7A78HC0A | crystal - crystal (inorganic) |
| 6K40C4SNW1 | crown - crown (3h) |
| 0F170BAD2 | case back gasket - case back gasket |
| D300GG | band - band |
| D293GG | band - metal band |
| D293GG-LK00 | band - link |
| DFM6AW | band - leather band |
| DFM6AW-BK00 | clasp - clasp |
| D293GG-BK00 | clasp - clasp |
| 3BA075F0BNS | others - second hand |
| 1BX035S0BDS | others - hour hand |
| 2BX052S0BDS | others - minute hand |
| 82845380 | others - case ring |
| AC004BAD1 | others - crown and stem gasket |
| 0351807 | others - winding stem |
| 1F210AR002A | others - case |
| 1F210AR0 | others - case back |
| 1F210BC0XB19 | others - dial |
| 1F215 | others - machine code |
| D293GG-LKPC | others - pipe for link |
| D293GG-LKPN | others - pin for link |