The Seiko 7B42-0AK0 is a watch model based on the 7B42 movement.
Parts List
| D3D6JE | band - metal band |
| D3D6LE | band - metal band |
| DG42JB | band - leather band |
| DG43JB | band - leather band |
| D3D6JE-LK00 | band - link |
| D3D6LE-LK00 | band - link |
| D3D6LE-BK00 | clasp - clasp |
| D3D6JE-BK00 | clasp - clasp |
| D3D6JE-BKPP | others - spring bar for buckle/clasp |
| D3D6JE-EP00 | others - endpiece |
| D3D6LE-BKPP | others - spring bar for buckle/clasp |
| D3D6LE-EP00 | others - endpiece |
| D3D6JE-LKPN | others - pin for link |
| D3D6LE-LKPN | others - pin for link |
| S200BS | others - push pin |
Other models with the same movement