The Seiko H601-5521 is a watch model based on the H601 movement.
Parts List
| ES0P19LN02 | crystal - crystal |
| ES0P19LN | crystal |
| 40MH1NS1 | crown - crown |
| 40MH1NN1 | crown - crown |
| 0F260BAA3 | case back gasket - case back gasket |
| 0F260BAA | case back gasket |
| 86593610 | crystal gasket - plastic gasket for crystal |
| 80605779 | pusher - button |
| 80605775 | pusher - button |
| B1843J | band - band |
| B1843K-LKG | band - link |
| B1843K | band - band |
| B1843K-BK1G | clasp - buckle |
| B1843K-PB1 | clasp - parts for buckle |
| 2AB080FDBLG | others - minute hand |
| 2AB080FDBLS | others - minute hand |
| 1AB055FEBLS | others - hour hand |
| 1AB055FEBLG | others - hour hand |
| 0351161 | others - winding stem |
| EB0055B01 | others - crown and stem gasket |
| EG0060B01 | others - button gasket |
| 83200273 | others - button spring clip |
| 82810890 | others - case ring |
| H601552161 | others - case |
| H6015521 | others - case back |
| H601552175 | others - case |
| H601547MXB13 | others - dial |
| H601547MXG14 | others - dial |
| H60171 | others - machine code |
| 84310396 | others - dial ring |
| 84310397 | others - dial ring |
| A180BS | others - push pin |
| 3BA100F1BNG | others - second hand |
| 3BA100F1BNS | others - second hand |