This is a DVD or Video disk.
From the AK Interactive website:
A new series of photographic reports made on different vehicles with hundreds of photographs of the impressive BOXER, the newest transport vehicle in the German army. The BOXER has also participated in Afghanistan with a desert camouflage. This DVD in PAL format contains hundreds of photos of all its details, like suspension, interior, amour, crew and troops and has the A1 Afghanistan version as well as the A0. This DVD also contains software to see the photographs in transparent mode or in gallery mode. Also all the photographs are high definition with watermarks so you can print them using your own printer and can make enlargements of the details that are of the most interest to you when you are building your model. The content of this DVD is the equivalent of 4 books of 76 pages, but at a much lower price. If what you are looking for is the best photographic references at an affordable price, this is the option for you. This all new series is the most innovative & thorough reference available for modelers & historians alike!