The IOLab Version 2.0 by Tim Stelzer and Mats Selen is a study aid textbook published by Freeman & Company, W&H in 2017. This online resource includes valuable information on general subjects and is authored by Mats Selen. The compact dimensions of 6.7 inches in length, 1.8 inches in height, and 3.5 inches in width make it convenient for studying on the go. With a weight of 9.6 ounces, this textbook is a practical and informative tool for students looking to enhance their understanding of various subjects. P.S. I have the electricity and magnetism kit too, it’s not included with this purchase. But if you are interested please let me know.