The Seiko 2N20-5010 is a watch model based on the 2N20 movement.
Parts List
| REFN21SJ01 | crystal |
| 25N19DA6 | crown |
| 0G2500B01 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| GK11B | band - leather band |
| QM03A | band - metal band |
| 07M25DGH | others - hour hand |
| 07M25DGM | others - minute hand |
| 0351107 | others - winding stem |
| 2N200020XS14 | others - dial |
| 2N200020XS24 | others - dial |
| 2N2011 | others - machine code |
| 2N205010EAA | others - case |
| 82801150 | others - case ring |
| A120AS | others - push pin |
Caliber 2N20
Other models with the same movement
| 2N20-0010 |
| 2N20-0020 |
| 2N20-0040 |
| 2N20-0050 |
| 2N20-0060 |
| 2N20-0070 |
| 2N20-0080 |
| 2N20-0090 |
| 2N20-0100 |
| 2N20-0110 |
| 2N20-0130 |
| 2N20-0140 |
| 2N20-5000 |
| 2N20-5020 |
| 2N20-5030 |
| 2N20-5050 |
| 2N20-5060 |
| 2N20-5070 |
| 2N20-5080 |
| 2N20-5090 |
| 2N20-509A |