The product is a vintage hardcover book titled "A User's Handbook of D-A and A-D Converters" by Eugene R. Hnatek. Published in 1976 by Krieger Publishing Company under Wiley Interscience, the book covers the topic of Electronics/Digital and is intended for adults. With 472 pages, the handbook provides detailed information on digital-to-analog and analog-to-digital converters, making it a valuable resource for those interested in technology and engineering.