The Seiko 5P31-7A30 is a watch model based on the 5P31 movement.
Parts List
| 280W48GN00 | crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 0A2600N0A | case back gasket |
| 0A2600N01 | case back gasket - case back gasket |
| 86570560 | crystal gasket - plastic gasket for crystal |
| AK10C | band - band |
| AK09C | band - band |
| 12T02FSH | others - hour hand |
| 12T02FSM | others - minute hand |
| 1BA085A0BAE | others - hour hand |
| 2BA120A0BAE | others - minute hand |
| 12T02FGH | others - hour hand |
| 82802420 | others - case ring |
| 5P317A3061 | others - case |
| 5P317A30 | others - case back |
| 5P317A3075 | others - case |
| 5P317A20XG18 | others - dial |
| 5P317A20XS17 | others - dial |
| 5P319 | others - machine code |
| A170BS | others - push pin |
| 0351670 | others - winding stem |
| 13SC04A2 | others - second hand |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 12T02FGM | others - minute hand |