The Seiko 7N42-8109 is a watch model based on the 7N42 movement.
Parts List
| 290P01LN03 | crystal - crystal (inorganic) |
| 8M35A0NNG2 | crown - crown |
| FE298BAA1 | case back gasket - case back gasket |
| 86582730 | crystal gasket - plastic gasket for crystal |
| 43Z0ZB | band - band |
| 43Z0ZB-LKG | band - link |
| 43Z0ZB-BK1G | clasp - buckle |
| 43Z0ZB-PB1 | clasp - parts for buckle |
| 1AB075L4BNG | others - hour hand |
| 2AB115L0BNG | others - minute hand |
| 3AA125F3ANG | others - second hand |
| A110BS | others - push pin (for mb) |
| 0878589 | others - date dial |
| 82850970 | others - case ring |
| 7N428109WFA | others - case |
| 7N428109 | others - case back |
| 0351892 | others - winding stem |
| 7N423 | others - machine code |
| 7N428171XL14 | others - dial |
| AD006BA12 | others - crown gasket |