The Seiko 5Y31-6A00 is a watch model based on the 5Y31 movement.
Parts List
| 265N21JN | crystal |
| 265N21JN01 | crystal |
| 45M81NH1 | crown |
| 45M81NN1 | crown |
| 0H2500B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| DZ0065B0 | case back gasket |
| 0H2500B0 | case back gasket |
| BMA19G | band - leather band |
| BMJ31G | band - leather band |
| BMJ32G | band - leather band |
| 10T53AGH | hand - hour hand |
| 10T53AGM | hand - minute hand |
| 3AA125F1ANG | others - second hand |
| 09SC27NG | others - second hand |
| 3BA125F1BNG | others - second hand |
| 5Y316A00 | others - case back |
| 5Y316A0025 | others - case |
| 5Y316A00HE | others - case |
| 5Y316A00XS14 | others - dial |
| 5Y316A10XB14 | others - dial |
| 5Y316A10XY14 | others - dial |
| A160BS | others - push pin |
| 82821330 | others - case ring |
| 2BC090A1BNG | others - minute hand |
| 10SC23T1 | others - second hand |
| 09T33CGM | others - minute hand |
| 09T33CGH | others - hour hand |
| 09T43NGM | others - minute hand |
| 1BC060A1BNG | others - hour hand |