The Seiko 5931-5161 is a watch model based on the 5931 movement.
Parts List
| SA8N65SN00 | crystal |
| 35N85DJ5 | crown |
| 012500B01 | case back gasket - gasket |
| DZ0065B01 | case back gasket - button gasket |
| OH2450B01 | case back gasket |
| QI016 | others - other band |
Caliber 5931
