“The Theory of Horology” is a highly advanced textbook on watchmaking, published in 2015 by the Swiss Federation of Technical College. Written by experts in the field including Charles-Andre Reymondin, Umberto Pelaratti, Georges Monnier, and Didier Jeanneret, this limited edition publication is part of a print run of only 1000 copies. With 376 pages and a hardcover format, this book is a comprehensive resource for adult learners and those in further education seeking to deepen their knowledge of horology. The language is English, making it accessible to a wide audience interested in the intricacies of watchmaking.