The Seiko 1F20-5H99 is a watch model based on the 1F20 movement.
Parts List
| REDN48SV01 | crystal |
| REDN48SV | crystal |
| 32M04NA7 | crown |
| 0H1800B01 | case back gasket - case back gasket |
| 0H1800B0 | case back gasket |
| Z5431C | band |
| Z5431C-LKG | band - link |
| Z5431C-PB4 | clasp - parts for buckle/clasp |
| Z5431C-BK7S | clasp - clasp |
| 0351807 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 1F201J60XS19 | others - dial |
| 1F205 | others - machine code |
| 1F205H99 | others - case back |
| 1F205H991Y | others - case |
| 82820360 | others - case ring |
| 86503363 | others - decorative plate |
| 86503383 | others - decorative plate |
| EZ0035B01 | others - crown and stem gasket |
| 2CE052L0BDA | others - minute hand |
| 1CE035L0BDA | others - hour hand |
Caliber 1F20
