The Seiko 1F20-0BN0 is a watch model based on the 1F20 movement.
Parts List
| RE6A80SB0A | crystal - crystal (sapphire) |
| 6M30E9SNG1 | crown - crown |
| 6M30E9SNG2 | crown - crown |
| 0F170BA1S | case back gasket - case back gasket |
| DEZ2BW | band - band |
| DEZ3BW | band - band |
| DEZ2BW-BJ00 | clasp - buckle |
| 1CH037L0BDG | others - hour hand |
| 2CH055L0BDG | others - minute hand |
| 1CA037A2BNP | others - hour hand |
| 2CA055A0BNP | others - minute hand |
| DB004BAD1 | others - crown and stem gasket |
| 1F200BN001A | others - case |
| 82843620 | others - case ring |
| 1F200BN0 | others - case back |
| 1F200BN002A | others - case |
| 1F200BV0XA15 | others - dial |
| 1F200BW0XA15 | others - dial |
| 1F203 | others - machine code |
| S130BS | others - push pin |
| 0351807 | others - winding stem |
Caliber 1F20
