The Seiko V821-0A40 is a watch model based on the V821 movement.
Parts List
| 210A02LN03 | crystal |
| 9M35A5NNG0 | crown - crown |
| 9M35A5SNW0 | crown - crown |
| 0F180BA1S | case back gasket - case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
| FFE0KZ | band - band |
| FFE1JZ | band - band |
| FF52KZ | band - band |
| FF52JZ | band - band |
| 1HC060A1BAC | others - hour hand |
| 1HA050A1BNS | others - hour hand |
| 3HA090F1BNS | others - second hand |
| 2HC085A1BAC | others - minute hand |
| 1HC055A1BAA | others - hour hand |
| 1HC060A1BAR | others - hour hand |
| 2HA085A1BNS | others - minute hand |
| 2HC082A1BAA | others - minute hand |
| 2HC085A1BAF | others - minute hand |
| 3HA082F1BNG | others - second hand |
| 3HA085F1BNS | others - second hand |
| 0354122 | others - winding stem |
| V8210A4003C | others - case |
| V8210A4004C | others - case |
| S130BS | others - push pin |
| V8210A4001 | others - case |
| 82826410 | others - case ring |
| V8210A4002 | others - case |
| 3HA090F1BNG | others - second hand |