The Seiko 7N42-9100 is a watch model based on the 7N42 movement.
Parts List
| 300P03JN03 | crystal - crystal |
| 8M45B1SNW0 | crown - crown |
| 8M45B1SNG1 | crown - crown |
| FE308BA13 | case back gasket - case back gasket |
| 86620990 | crystal gasket - plastic gasket for crystal |
| 86621010 | bezel gasket - plastic gasket for bezel |
| AD006BAA1 | pusher - button gasket |
| D1A7AG | band - band |
| D1A7CG | band - band |
| D1A7AG-LK00 | band - link |
| D1A7CG-LK00 | band - link |
| D1A7CG-BK00 | clasp - clasp |
| D1A7AG-BK00 | clasp - clasp |
| 3AA125F3ANG | others - second hand |
| 3AA125F3ANS | others - second hand |
| 0351892 | others - winding stem |
| 82851310 | others - case ring |
| 7N42910061A | others - case |
| 82313976 | others - bezel |
| 7N429100 | others - case back |
| 7N4291006YA | others - case |
| 82313975 | others - bezel |
| 7N423 | others - machine code |
| 7N429250XS14 | others - dial |
| 7N429260XB13 | others - dial |
| 7N429270XS13 | others - dial |
| A200BS | others - push pin |
| D1A7AG-BKPP | others - spring bar for buckle/clasp |
| D1A7AG-EP00 | others - endpiece |
| D1A7AG-LKPN | others - pin for link |
| D1A7CG-BKPP | others - spring bar for buckle/clasp |
| D1A7CG-EP00 | others - endpiece |
| D1A7CG-LKPN | others - pin for link |
| 1AF085L1BDG | others - hour hand |