The Seiko 1E50-5039 is a watch model based on the 1E50 movement.
Parts List
| ESBN18GN00 | crystal |
| ESBN18GN | crystal |
| 30M66NA1 | crown |
| 0H1300N01 | case back gasket |
| 0H1300N0 | case back gasket |
| DZ0041B0 | case back gasket |
| B5177G | band - metal band |
| B5177G-BK6G | clasp - clasp |
| B5177G-PB3 | clasp - parts for buckle/clasp |
| 04V22DGH | others - hour hand |
| 04V22DGM | others - minute hand |
| 1E500070XS14 | others - dial |
| 1E500070XY14 | others - dial |
| 1E5050392N | others - case |
| 1E509 | others - machine code |
| 82723420 | others - case ring |
| B5177G-EP2 | others - endpiece |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E50
