The Seiko 4N20-5570 is a watch model based on the 4N20 movement.
Parts List
| 30M57NA1 | crown - crown |
| 30M57NS1 | crown - crown |
| 0H1500B01 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| WH94BW | band - band |
| WH96AW | band - band |
| 1CA030A1BNG | others - hour hand |
| 2CA050A1BNG | others - minute hand |
| 4N20557026A | others - case |
| 82837310 | others - case ring |
| 4N205570 | others - case back |
| 4N2055702EA | others - case |
| 4N201910XA14 | others - dial |
| 4N2061 | others - machine code |
| 0351155 | others - winding stem |