The Seiko 4N21-1140 is a watch model based on the 4N21 movement.
Parts List
| 160A02SN02 | crystal - crystal (sapphire) |
| 6M30A3NNG1 | crown - crown |
| 0F140BAA3 | case back gasket - case back gasket |
| 4918CG-LK3 | band - link |
| 4918CG | band - band |
| 4918CG-BKX | clasp - buckle |
| 3BA075F1BNG | others - second hand |
| 1BA045A1BNG | others - hour hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 82840910 | others - case ring |
| 4N211140SAA | others - case |
| 4N212780XG19 | others - dial |
| T070AS | others - push pin |
| 2BA067A1BNG | others - minute hand |