The Seiko Y151-0B20 is a watch model based on the Y151 movement.
Parts List
| 190W56SN01 | crystal |
| 30M56NB1 | crown |
| 30M56N01 | crown |
| 0A1500N01 | case back gasket |
| 0A1500B01 | case back gasket |
| HA74B | band - metal band |
| HA75B | band - metal band |
| 1BF037AMBNG | others - hour hand |
| 2BF055AMBNG | others - minute hand |
| 3BA075F1BNG | others - second hand |
| 0351807 | others - winding stem |
| T070BS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |