The Seiko Y100-5819 is a watch model based on the Y100 movement.
Parts List
| SA6W94GN00 | crystal |
| 35M82NF1 | crown |
| 35M82NA1a1 | crown |
| 0A2700B01 | case back gasket - gasket |
| 86569460 | crystal gasket - plastic gasket for crystal |
| 7BS9ZY | band - leather band |
| 82716780 | others - case ring |
| Y1004120XG18 | others - dial |
| Y10058197S | others - case |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 0354765 | others - winding stem |
| 0Z0060B01 | others - crown and stem gasket |
| 09C38ADM | others - minute hand |
| 09C38ADH | others - hour hand |