The Seiko 1F20-5J1H is a watch model based on the 1F20 movement.
Parts List
| REDN46SV01 | crystal - crystal |
| REDN46SV | crystal |
| 32M04NA8 | crown |
| 32M04NB8 | crown - crown |
| 0E240BA16 | case back gasket |
| EZ0035B0 | case back gasket |
| Z1617D | band |
| Z1617N | band - band |
| Z1617D-LKG | band - link |
| Z1617D-PB4 | clasp - parts for buckle/clasp |
| Z1617D-BK7S | clasp - clasp |
| 1F205J1H1YA | others - case |
| 86503324 | others - decorative plate |
| 86503344 | others - decorative plate |
| 81180169 | others - bracelet fixing pipe |
| 82824140 | others - case ring |
| 81601169 | others - bracelet fixing pin |
| 1F205J1H | others - case back |
| 1F201J70XL19 | others - dial |
| 1F205 | others - machine code |
| 1F205J1H1Y | others - case |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 2CE080L0BDA | others - minute hand |
| 08Y12ZGM | others - minute hand |
| 1CE052L0BDA | others - hour hand |
| 08Y12ZGH | others - hour hand |
Caliber 1F20
