The Seiko W309-4130 is a watch model based on the W309 movement.
Parts List
| ES8W76LM01 | crystal |
| 86560320 | case back gasket - plastic gasket for case back |
| EA0090B0A | case back gasket - button gasket |
| 86575600 | crystal gasket |
| 061LF | band - resin band |
| 011MF | band - metal band |
| A180CS | others - push pin |