The Seiko Y151-0C20 is a watch model based on the Y151 movement.
Parts List
| 180A02SN02 | crystal - crystal (sapphire) |
| 25M44NB4 | crown |
| 0A1600N01 | case back gasket |
| DK39E | band - leather band |
| 3BA075F1BNG | others - second hand |
| A120BS | others - push pin (for lb) |
| Y1510C2075 | others - case |
| Y1510C30XG14 | others - dial |
| Y1511 | others - machine code |
| 0351807 | others - winding stem |
| 1BB045A2BNG | others - hour hand |
| 82833520 | others - case ring |
| EZ0035B01 | others - crown and stem gasket |
| 2BB065A0BNG | others - minute hand |