The Seiko 1E50-5139 is a watch model based on the 1E50 movement.
Parts List
| SA9W00SN | crystal |
| SA9W00SN01 | crystal - crystal (sapphire) |
| 30M82NA1 | crown - crown |
| 0A2500N01 | case back gasket - rotating bezel gasket |
| EZ0035B0 | case back gasket |
| 86574480 | crystal gasket - plastic gasket for crystal |
| B1429C | band - metal band |
| B1429C-LKG | band - link |
| B1429D | band - metal band |
| B1429D-LKG | band - link |
| B1429D-PB1 | clasp - parts for buckle/clasp |
| B1429D-BK7G | clasp - clasp |
| B1429C-PB1 | clasp - parts for buckle/clasp |
| B1429C-BK7S | clasp - clasp |
| 04V04ABH | hand - hour hand |
| 04V36CGM | hand - minute hand |
| 1E500280XN14 | others - dial |
| 1E500280XS14 | others - dial |
| 1E505139PM | others - case |
| 1E505139SF | others - case |
| 1E509 | others - machine code |
| 82800920 | others - case ring |
| 81181859 | others - bracelet fixing pipe |
| 81606479 | others - bracelet fixing pin |
| B1429C-EPS | others - endpiece |
| B1429D-EPG | others - endpiece |
| EZ0035B01 | others - crown and stem gasket |
| 0354930 | others - winding stem |
| 04V36DGM | others - minute hand |
| 04V04NGH | others - hour hand |
Caliber 1E50
