The Seiko 1F20-5A30 is a watch model based on the 1F20 movement.
Parts List
| ESKN34JN01 | crystal |
| ESKN34JN | crystal |
| 30M98NA1 | crown |
| 0H1300N01 | case back gasket |
| 0H1300N0 | case back gasket |
| DZ0041B0 | case back gasket |
| Z5297G-LKG | band - link |
| Z5297C-LKG | band - link |
| Z5297D | band - metal band |
| Z5297D-LKG | band - link |
| Z5297G | band - metal band |
| Z5297C | band - metal band |
| Z5297C-BK4S | clasp - clasp |
| Z5297G-BK4G | clasp - clasp |
| Z5297D-PB2 | clasp - parts for buckle/clasp |
| Z5297D-BK4G | clasp - clasp |
| Z5297C-PB2 | clasp - parts for buckle/clasp |
| Z5297G-PB2 | clasp - parts for buckle/clasp |
| 0351807 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 82812160 | others - case ring |
| 1F200A60XG14 | others - dial |
| 1F200A60XG24 | others - dial |
| 1F200A60XS14 | others - dial |
| 1F205A30 | others - case back |
| 1F205A3025 | others - case |
| 1F205A302E | others - case |
| 1F209 | others - machine code |
| 82813040 | others - case ring |
| 2CE042L0BDG | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 04Y12DGM | others - minute hand |
| 1CE030L4BDG | others - hour hand |
| 04Y12DGH | others - hour hand |
Caliber 1F20
