The product is a hardcover textbook titled “Principles of Electronic Communication Systems” by authors Louis E. Frenzel Jr. and Louis E. Frenzel. Published by McGraw-Hill Education in 2016, this book covers the subject areas of mobile and wireless communications, telecommunications, and electronics/digital technology. With 944 pages, this textbook is a comprehensive resource for students and professionals in the field of electronic communication systems. Written in English, this book provides detailed explanations and insights into the principles of electronic communication systems.