What's inside?This version of the 9th mini album ATE by Stray Kids consists of two versions: the Chk Chk version and the Boom version. Each album contains a photobook with no fewer than 64 pages, a CD, a mini photobook, a random photocard (one of 16 versions), a 4-cut photo and a random unit photocard (one of eight versions). The photobook and CD are different in both versions. Perfect for fans and collectors!