This Omega Watch Instructions Booklet Manual 1/19 Cal. 8400, 8500, 8601, 8900, 1861 is an excellent resource for anyone looking to learn more about their Omega watch. It contains detailed instructions and diagrams for operating and maintaining your watch, making it an invaluable tool for any Omega watch owner.

With information on the brand, type, model, year manufactured, country/region of manufacture, type of part, type of tool, and categories, this booklet provides all the necessary details on the watch without mentioning its condition. Whether you're a seasoned Omega watch collector or a new owner, this manual is a must-have resource.