The Seiko Y136-6B20 is a watch model based on the Y136 movement.
Parts List
| 200A02LN03 | crystal - crystal |
| 8M30A0SJA1 | crown - crown |
| 8M30A0BNG1 | crown - crown |
| 0F190NA1S | case back gasket - case back gasket |
| DK82H | band - band |
| DK95K | band - band |
| A120BS | others - push pin (for lb) |
| Y1366B207S | others - case |
| Y1366B20RC | others - case |
| 0354786 | others - winding stem |
| 82735020 | others - case ring |
| 08CP0AGM | others - minute hand |
| AD006BA12 | others - crown gasket |
| 10SC56NG | others - second hand |
| 08CV6AGH | others - hour hand |