The Seiko 4N20-0720 is a watch model based on the 4N20 movement.
Parts List
| 170A02SN02 | crystal - crystal (sapphire) |
| 6M30Y1SNG0 | crown |
| 0F140BAA3 | case back gasket - case back gasket |
| MK66F | band - leather band |
| 1CD047AABNB | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 82840910 | others - case ring |
| 4N200720 | others - case back |
| 4N20072076A | others - case |
| 4N201210XS19 | others - dial |
| 4N2061 | others - machine code |
| A110AS | others - push pin |
| 2CD070AABDB | others - minute hand |