The Seiko 1F20-6H80 is a watch model based on the 1F20 movement.
Parts List
| ES5A25S20A | crystal - crystal |
| ES5A25S20B | crystal - crystal |
| ES5A25S20C | crystal - crystal |
| 6M30X7SNGA | crown - crown |
| 6M30X7SNSA | crown - crown |
| 0F150BA1S | case back gasket - case back gasket |
| 2064AB | band - band |
| 2064BB | band - band |
| 2064CB | band - band |
| 2064AB-LK9 | band - link |
| 2064BB-LK9 | band - link |
| 2064CB-LK9 | band - link |
| 2064AB-PB2 | clasp - parts for buckle |
| 2064BB-PB2 | clasp - parts for buckle |
| 2064CB-PB2 | clasp - parts for buckle |
| 2064AB-BKX | clasp - buckle |
| 2064BB-BKX | clasp - buckle |
| 2064CB-BKX | clasp - buckle |
| 1CE035L0BDG | others - hour hand |
| 1CE035L0BDS | others - hour hand |
| 2CE050L2BDG | others - minute hand |
| 2CE050L2BDS | others - minute hand |
| 0351807 | others - winding stem |
| DB004BAD1 | others - crown and stem gasket |
| 81190075 | others - bracelet fixing pipe |
| 82845950 | others - case ring |
| 81611439 | others - bracelet fixing pin |
| 1F206H8003A | others - case |
| 1F202T00XB13 | others - dial |
| 1F202T00XL14 | others - dial |
| 1F202T00XN14 | others - dial |
| 1F205 | others - machine code |
| 1F206H8001A | others - case |
| 1F206H80 | others - case back |
| 1F206H8002A | others - case |
Caliber 1F20
