The Seiko 1F20-6G20 is a watch model based on the 1F20 movement.
Parts List
| ES1A30JZ0C | crystal - crystal |
| ES1A30JZ0E | crystal - crystal |
| ES1A30JZ0F | crystal - crystal |
| 25M18NS1 | crown - crown |
| 25M18NA1 | crown |
| 0F150BA1S | case back gasket - case back gasket |
| C030BB-LK9 | band - link |
| C032BB-LK9 | band - link |
| C033AB-LK9 | band - link |
| C030BB | band - band |
| C032BB | band - band |
| C033AB | band - band |
| C030BB-BKL | clasp - buckle |
| C030BB-PB2 | clasp - parts for buckle |
| C032BB-BKL | clasp - buckle |
| C032BB-PB2 | clasp - parts for buckle |
| C033AB-BKL | clasp - buckle |
| C033AB-PB2 | clasp - parts for buckle |
| 2CE045L0BDG | others - minute hand |
| 1F206G2025A | others - case |
| 0351807 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 82814280 | others - case ring |
| 1F206G2025 | others - case |
| 1F206G20 | others - case back |
| 1F202R20XE14 | others - dial |
| 1F202R20XG14 | others - dial |
| 1F202R20XL14 | others - dial |
| 1F205 | others - machine code |
| 1F206G202E | others - case |
| EZ0035B01 | others - crown and stem gasket |
| 04Y02DGM | others - minute hand |
| 1CE030L2BDG | others - hour hand |
| 04V02DGH | others - hour hand |
Caliber 1F20
