The Seiko 7N42-8090 is a watch model based on the 7N42 movement.
Parts List
| 290P01L20B | crystal - crystal |
| 8M35A0NNG2 | crown - crown |
| 8M35A0SNG2 | crown - crown |
| FE298BAA1 | case back gasket - case back gasket |
| FE297BAA1 | case back gasket |
| 86582731 | crystal gasket - plastic gasket for crystal |
| 4422LB | band - band |
| 4422CB | band - band |
| 48F9LZ | band - band |
| 4422CB-LKG | band - link |
| 4422LB-LKG | band - link |
| 48F9LZ-LK4 | band - link |
| 48F9LZ-BKJ | clasp - buckle |
| 48F9LZ-PB1 | clasp - parts for buckle |
| 4422CB-BK1S | clasp - buckle |
| 4422CB-PB1 | clasp - parts for buckle |
| 4422LB-BK1G | clasp - buckle |
| 4422LB-PB1 | clasp - parts for buckle |
| 2BB115LCBSG | others - minute hand |
| 3AA125F3ANG | others - second hand |
| 1AB075L4BNG | others - hour hand |
| 2AB115L0BNG | others - minute hand |
| 3AX135F0ASG | others - second hand |
| 2AX120F4BSG | others - minute hand |
| 1AX080F0BSG | others - hour hand |
| 2AC120FABSG | others - minute hand |
| 1AC082FABSG | others - hour hand |
| A110BS | others - push pin (for mb) |
| 0878580 | others - date dial |
| 0878589 | others - date dial |
| 4422CB-EPG | others - endpiece |
| 7N428090WFB | others - case |
| 82850970 | others - case ring |
| 7N428090WFA | others - case |
| 7N428090 | others - case back |
| 0351892 | others - winding stem |
| 7N423 | others - machine code |
| 7N428170XL14 | others - dial |
| 7N428171XL14 | others - dial |
| 7N428171XS14 | others - dial |
| 7N428371XB14 | others - dial |
| 7N428381XN14 | others - dial |
| 7N428381XS14 | others - dial |
| 7N428391XL19 | others - dial |
| 7N428391XS19 | others - dial |
| 3AX125F3ASG | others - second hand |
| AD006BA12 | others - crown gasket |
| 1AB075LPBSG | others - hour hand |