The Seiko 4N00-5931 is a watch model based on the 4N00 movement.
Parts List
| ES2A45JN02 | crystal - crystal |
| ES2A45JN | crystal |
| 32M41NN1 | crown |
| 0H1500B01 | case back gasket - case back gasket |
| 0H1500B0 | case back gasket |
| 2CE045L0BDG | others - minute hand |
| DA007BA11 | others - crown and stem gasket |
| 1CE030L2BDG | others - hour hand |