The Seiko 6431-5180 is a watch model based on the 6431 movement.
Parts List
| BA1N12GN00 | crystal - crystal |
| 35M98NK1 | crown - crown |
| 0H2520B01 | case back gasket |
| 86566100 | crystal gasket - plastic gasket for crystal |
| JK16A | band - band |
| 09T08DBH | others - hour hand |
| 09T08DBM | others - minute hand |
| 0354641 | others - winding stem |
| 643151801B | others - case |
| 82709340 | others - case ring |
| 64315340XS19 | others - dial |
| A180BS | others - push pin |
| 13SC04AB | others - second hand |
Caliber 6431
