The Seiko V306-6420 is a watch model based on the V306 movement.
Parts List
| 290G50LK01 | crystal |
| 290G50LK02 | crystal |
| 290G50LK03 | crystal |
| 35MW0N01 | crown |
| 35MW0NK1 | crown |
| 35MW0NS1 | crown |
| 35MW0NU1 | crown |
| 0A1900B01 | case back gasket - gasket |
| 0A2600B01 | case back gasket |
| JE85A | band - metal band |
| JE88A | band - metal band |
| JE86A | band - metal band |
| JE87A | band - metal band |
| 12CR0FAH | others - hour hand |
| 0354532 | others - winding stem |
| 12CR0FGH | others - hour hand |
| A140BS | others - push pin |
| 12CR0FGM | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
| 12CR0FAM | others - minute hand |
| 13SC04AB | others - second hand |
| 12CR0FSH | others - hour hand |
| 12CR0FSM | others - minute hand |