The Seiko V721-0A20 is a watch model based on the V721 movement.
Parts List
| 330P01LN03 | crystal - crystal (inorganic) |
| 8Z55M0NNW1 | crown - crown |
| 86590400 | crystal gasket - plastic gasket for crystal |
| 86579420 | crystal gasket - plastic gasket for crystal |
| F0H8JB | band - band |
| J0P8112J0 | band - metal band |
| 1AD095SMBNB | others - hour hand |
| 3AA160FMANB | others - second hand |
| 81190055 | others - bracelet fixing pipe |
| 81606899 | others - bracelet fixing pin |
| 81185109 | others - bracelet fixing pipe |
| 0351880 | others - winding stem |
| 89916700 | others - case back spacer |
| V7210A2012 | others - case |
| 82738800 | others - case ring |
| 2AX135SMBNB | others - minute hand |