The Seiko 1F20-5K49 is a watch model based on the 1F20 movement.
Parts List
| K05N12JK01 | crystal |
| K05N12JK | crystal |
| 30M62NA3 | crown |
| 0H1400B01 | case back gasket - case back gasket |
| 0H1400B0 | case back gasket |
| B5686G | band |
| B5686G-LKG | band - link |
| B5686G-BK4G | clasp - clasp |
| 1CE022L0BDG | others - hour hand |
| 2CE035L0BDG | others - minute hand |
| 0351807 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 1F202B30XL14 | others - dial |
| 1F205 | others - machine code |
| 1F205K49 | others - case back |
| 1F205K492N | others - case |
| 82831100 | others - case ring |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1F20
