The Seiko 5P31-5150 is a watch model based on the 5P31 movement.
Parts List
| BA3W01HM01 | crystal |
| 32M07DA1 | crown |
| 32M07NA1 | crown - crown |
| 0F255BAA3 | case back gasket - dichtung -boden rund |
| B1537G | band - metal band |
| B1537G-BK3G | clasp - clasp |
| 3BA125F1BNG | others - second hand |
| EB0055B01 | others - crown and stem gasket |
| 5P315150 | others - case back |
| 5P31515075 | others - case |
| 5P315210XG14 | others - dial |
| 82812630 | others - case ring |
| A180BS | others - push pin |
| 08SC29NG | others - second hand |
| 08T05DGM | others - minute hand |
| 07T01DGH | others - hour hand |