The Seiko 5P31-6A3B is a watch model based on the 5P31 movement.
Parts List
| 275W10SN00 | crystal - crystal |
| 35MA8NA1 | crown |
| 0A2600N01 | case back gasket - case back gasket |
| 86574200 | crystal gasket |
| AL14B | band - band |
| 5P316A3B75 | others - case |
| 5P316A3B | others - case back |
| 5P316D30XG14 | others - dial |
| 5P319 | others - machine code |
| A170BS | others - push pin |
| 82803260 | others - case ring |
| 0351670 | others - winding stem |
| 12T02ABH | others - hour hand |
| 12T02ABM | others - minute hand |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |