The Seiko 1E20-3A60 is a watch model based on the 1E20 movement.
Parts List
| K02N46SC01 | crystal - crystal |
| K02N46SJ01 | crystal |
| K02N46SJ03 | crystal - crystal |
| K02N46SJ04 | crystal - crystal |
| 6M30B2STG1 | crown - crown |
| 6M30B2STW1 | crown - crown |
| 0E120NA1S | case back gasket |
| 0E120BA1S | case back gasket - case back gasket(lower) |
| B5360 | band - band |
| B5479 | band - band |
| B5677 | band - band |
| C029BB | band - band |
| C038BB | band - metal band |
| C039AB | band - band |
| C028BB | band - band |
| 04V22DGH | others - hour hand |
| 04V22DGM | others - minute hand |
| 04V22DSH | others - hour hand |
| 04V22DSM | others - minute hand |
| 04V14DGH | others - hour hand |
| 04V14DGM | others - minute hand |
| 0351931 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 81609339 | others - bracelet fixing pin |
| 1E203A6025A | others - case |
| 1E203A6011 | others - case |
| 82802480 | others - case ring |
| 1E203A60 | others - case back |
| 1E203A6025 | others - case |
| 1E203A6025B | others - case |
| 1E205A40XE14 | others - dial |
| 1E205A40XL14 | others - dial |
| 1E205A40XL23 | others - dial |
| 1E205A40XR14 | others - dial |
| 1E205A40XS14 | others - dial |
| 1E205A40XY14 | others - dial |
| 1E208 | others - machine code |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
