The Seiko 5P30-5120 is a watch model based on the 5P30 movement.
Parts List
| REFN35JN01 | crystal |
| 30N77NA1 | crown |
| 0H2600B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| B1446G-LKG | band - link |
| B1446G | band - metal band |
| B1446G-BK4G | clasp - clasp |
| 5P305120 | others - case back |
| 5P30512025 | others - case |
| 5P305210XG14 | others - dial |
| 82801890 | others - case ring |
| A140BS | others - push pin |
| 08T17DGM | others - minute hand |
| 08T17DGH | others - hour hand |