The Seiko H557-5120 is a watch model based on the H557 movement.
Parts List
| SA3W44GN00 | crystal - crystal |
| 40M76NA1 | crown |
| 0A2880N01 | case back gasket - case back gasket |
| 86561820 | crystal gasket - plastic gasket for crystal |
| 80613201 | pusher - button |
| NK38A | band - band |
| 08SC16AG | others - second hand |
| EG0060B01 | others - button gasket |
| 83200271 | others - button spring clip |
| 0354655 | others - winding stem |
| H557512075 | others - case |
| 84300841 | others - dial ring |
| A190CS | others - push pin |
| H5571 | others - machine code |
| H5575180XG18 | others - dial |
| 08T06CLH | others - hour hand |
| 08T06CLM | others - minute hand |