The 'Set of 3 HARMONY SECRET PHOTOBOOK' is a beautifully curated collection designed for fans and collectors. This set includes three distinct photo books, each showcasing stunning images and behind-the-scenes moments. Made with high-quality materials, the cover features an elegant design with the title embossed in gold, providing a luxurious touch. Each book measures 21.00 x 29.70 cm, making it a perfect coffee table addition. Along with the photo books, customers will receive one signed member postcard (randomly selected from four options), one official A4-sized poster, and a special random postcard, adding extra value to the collection. This set captures the essence of harmony in artistic photography, making it a must-have for any enthusiast.