The Seiko 1F20-5A00 is a watch model based on the 1F20 movement.
Parts List
| ESKN12JN01 | crystal |
| ESKN12JN | crystal |
| 30M98NA1 | crown |
| 0H1400N01 | case back gasket - case back gasket |
| 0H1400N0 | case back gasket |
| DZ0041B0 | case back gasket |
| B5500G | band - metal band |
| B5500G-BK3G | clasp - clasp |
| T070AS | others - push pin |
| 0351807 | others - winding stem |
| 82812160 | others - case ring |
| 1F200A10XG14 | others - dial |
| 1F200A20XS19 | others - dial |
| 1F205A00 | others - case back |
| 1F205A0025 | others - case |
| 1F209 | others - machine code |
| DZ0041B01 | others - crown and stem gasket |
| 04Y15DGM | others - minute hand |
| 04Y15DGH | others - hour hand |
| 04Y08FGM | others - minute hand |
| 04Y06FGH | others - hour hand |
| ESKN12JN01 | crystal |
| ESKN12JN | crystal |
| 30M98NA1 | crown |
| 0H1400N01 | case back gasket - case back gasket |
| 0H1400N0 | case back gasket |
| DZ0041B0 | case back gasket |
| B5500G | band - metal band |
| B5500G-BK3G | clasp - clasp |
| T070AS | others - push pin |
| 0351807 | others - winding stem |
| 82812160 | others - case ring |
| 1F200A10XG14 | others - dial |
| 1F200A20XS19 | others - dial |
| 1F205A00 | others - case back |
| 1F205A0025 | others - case |
| 1F209 | others - machine code |
| DZ0041B01 | others - crown and stem gasket |
| 04Y15DGM | others - minute hand |
| 04Y15DGH | others - hour hand |
| 04Y08FGM | others - minute hand |
| 04Y06FGH | others - hour hand |
Caliber 1F20
