The Seiko V821-5120 is a watch model based on the V821 movement.
Parts List
| SA2A81L20A | crystal - crystal |
| 35M37NN1 | crown - crown |
| 0F200BA1S | case back gasket - case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
| 80E9JG | band - band |
| 8E51KB | band - band |
| 80E9KG | band - band |
| 2HC060A1BNG | others - minute hand |
| 1HC042A1BNG | others - hour hand |
| V821512062A | others - case |
| 82893990 | others - case ring |
| V82151207SA | others - case |
| A150BS | others - push pin |
| 0354122 | others - winding stem |
| 3HC075F1BNG | others - second hand |
| 3HA075F1BNG | others - second hand |