The Seiko 5Y66-0BC0 is a watch model based on the 5Y66 movement.
Parts List
| 270A02SN02 | crystal - crystal |
| 8K45F8SNN1 | crown - crown (3h) |
| 0F240BAD2 | case back gasket - case back gasket |
| M0P31NLK | band - link |
| M0P3211N0 | band - metal band |
| H00P14SF03D | clasp - clasp |
| 1AX080LNBDS | hand - hour hand |
| 3BC030F0BNS | hand - sub hand (10h) |
| 3BX135F5BA7 | hand - hand |
| 2AX115L2BDS | others - minute hand |
| 3BA030F0BNS | others - small hand (9h) |
| 82737860 | others - case ring |
| S160BS | others - push pin |
| W140150AS | others - wave pin (band) |
| Z160BS | others - push pin (clasp and band) |
| 5Y660BC002D | others - case |
| 5Y660BC002D-U | others - case back |
| 5Y660BK8XB35 | others - dial |
| 5Y661 | others - machine code |
| 0351892 | others - winding stem |
| AD006BAD1 | others - crown and stem gasket |