The Seiko 4N21-5460 is a watch model based on the 4N21 movement.
Parts List
| SA3A01SN02 | crystal - crystal |
| 35MX7NS1 | crown - crown |
| 0F190BA1S | case back gasket - case back gasket |
| D177AZ | band - band |
| D177AZ-LK00 | band - link |
| D177AZ-LK2 | band - link |
| D177AZ-PB1 | clasp - parts for buckle/clasp |
| D177AZ-BKK | clasp - clasp |
| 2BA075A5BNS | others - minute hand |
| 1BA035A7BNS | others - hour hand |
| 3BA075F1BNS | others - second hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 81180189 | others - bracelet fixing pipe |
| 82839590 | others - case ring |
| 81612209 | others - bracelet fixing pin |
| 4N21546061A | others - case |
| 4N215460 | others - case back |
| 4N212620XL13 | others - dial |
| 4N212620XS13 | others - dial |
| 4N2165 | others - machine code |