The Seiko H601-5540 is a watch model based on the H601 movement.
Parts List
| SAFN49JN01 | crystal |
| SAFN49JN | crystal |
| 35NJ1NS1 | crown |
| 35NJ1NA1 | crown |
| 0G2900B0 | case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| 0G2900B02 | case back gasket |
| 80605851 | pusher |
| 80605859 | pusher |
| 4027AB | band |
| 4027BB-LKG | band - link |
| 4027AB-LKS | band - link |
| 4027BB | band |
| 4027AB-PB1 | clasp - parts for buckle/clasp |
| 4027BB-BK1G | clasp - clasp |
| 4027AB-BK1S | clasp - clasp |
| 4027BB-PB1 | clasp - parts for buckle/clasp |
| 2AA075A1BNS | others - minute hand |
| 3BA125F1BNG | others - second hand |
| 1AA050A1BAA | others - hour hand |
| 1AA050A1BAC | others - hour hand |
| 3BA125F1BNS | others - second hand |
| EG0060B01 | others - button gasket |
| 83200271 | others - button spring clip |
| 0351161 | others - winding stem |
| 82732710 | others - case ring |
| A180BS | others - push pin |
| H6015050XB23 | others - dial |
| H6015490XG14 | others - dial |
| H6015490XS13 | others - dial |
| H6015540 | others - case back |
| H601554011 | others - case |
| H601554025 | others - case |
| H60170 | others - machine code |
| 2AA075A1BAA | others - minute hand |
| 1AA050A1BNS | others - hour hand |
| 2AA075A1BAC | others - minute hand |