The Seiko 1F20-5G49 is a watch model based on the 1F20 movement.
Parts List
| ESCW34JN01 | crystal |
| ESCW34JN | crystal |
| 30M36NA3 | crown - crown |
| 0H1500B01 | case back gasket - case back gasket |
| 0H1500B0 | case back gasket |
| B5611G | band |
| B5610G | band |
| B5610G-BK3G | clasp - clasp |
| B5611G-BK3G | clasp - clasp |
| B5611G-EP2 | others - endpiece |
| B5610G-EP2 | others - endpiece |
| 0351807 | others - winding stem |
| 82814280 | others - case ring |
| 1F201E20XG14 | others - dial |
| 1F201E30XB14 | others - dial |
| 1F205G49 | others - case back |
| 1F205G492N | others - case |
| 1F209 | others - machine code |
| 03Y12DGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 03Y12DGH | others - hour hand |
Caliber 1F20
