The Seiko 1E20-5910 is a watch model based on the 1E20 movement.
Parts List
| ESHN16JN01 | crystal - crystal |
| 30M68NA1 | crown - crown |
| 30M68NS1 | crown |
| 0H1000N01 | case back gasket - case back gasket |
| HT03A | band - metal band |
| HT04A | band - band |
| 04V10DGH | others - hour hand |
| 04V10DSM | others - minute hand |
| 04V10DGM | others - minute hand |
| 0351931 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 1E20591025 | others - case |
| 82803980 | others - case ring |
| 1E205910 | others - case back |
| 1E201590XG14 | others - dial |
| 1E201590XS13 | others - dial |
| 1E2059102E | others - case |
| 1E208 | others - machine code |
| DZ0041B01 | others - crown and stem gasket |
| 04V10DSH | others - hour hand |
Caliber 1E20
