The Seiko 5S21-7A49 is a watch model based on the 5S21 movement.
Parts List
| 285W40JN01 | crystal |
| 285W40JN | crystal |
| 35M82NA1 | crown - crown |
| 0A2800B01 | case back gasket |
| Z1588G | band |
| Z1588G-LKG | band - link |
| Z1588G-PB1 | clasp - parts for buckle/clasp |
| Z1588G-BK1G | clasp - clasp |
| 11T09AGH | others - hour hand |
| 11T09AGM | others - minute hand |
| 0351683 | others - winding stem |
| 5S217A40XS14 | others - dial |
| 5S217A49 | others - case back |
| 5S217A4975 | others - case |
| 5S219 | others - machine code |
| 82812720 | others - case ring |
| A170BS | others - push pin |
| 13SC22TL | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 5S21
