The Seiko 1F20-0BT0 is a watch model based on the 1F20 movement.
Parts List
| 260P16SB0A | crystal - crystal (sapphire) |
| 6M30F2STG1 | crown - crown (3h) |
| 6M30F2STW1 | crown - crown (3h) |
| 6M30Z6STWA | crown - crown (3h) |
| 0F130BA1S | case back gasket - case back gasket |
| 86563380 | crystal gasket - plastic gasket for crystal |
| 86178261 | bezel gasket - plastic gasket for bezel |
| DFN7AB | band - band |
| DFR5AB | band - band |
| DFN9AW | band - band |
| DFN8BB | band - band |
| DFN7AB-BK00 | clasp - clasp |
| DFN8BB-BK00 | clasp - clasp |
| DFN9AW-BK00 | clasp - clasp |
| DFR5AB-BK00 | clasp - clasp |
| 1CF065A0BNN | others - hour hand |
| 2CF100A0BDN | others - minute hand |
| 1CG065L0BCM | others - hour hand |
| 2CG095L0BCM | others - minute hand |
| 1CG065L0BDS | others - hour hand |
| 2CG095L0BDS | others - minute hand |
| 1CG065L0BD1 | others - hour hand |
| 2CG095L0BD1 | others - minute hand |
| 82813320 | others - case ring |
| 1F200BT0 | others - case back |
| 1F200BT002A | others - case |
| 1F200BT003A | others - case |
| 85942021 | others - bezel |
| 0351808 | others - winding stem |
| 1F200BT001A | others - case |
| 85942009 | others - bezel |
| DB004BAD1 | others - crown and stem gasket |
| 86177531 | others - crystal plastic gasket |
| 1F200CD0XB15 | others - dial |
| 1F200CD0XS15 | others - dial |
| 1F200CE0XA19 | others - dial |
| 1F200CH0X915 | others - dial |
| 1F203 | others - machine code |
| 1F200BT004A | others - case |
| 85942029 | others - bezel |
| S180BS | others - push pin |
Caliber 1F20
