This journal has a core processing unit set into the front cover. We were recycling parts from a PC. Please note that the part does sit slightly proud above the book board. Covers have Italian paper with geometric squares. The 128 text pages are graph paper. The book is sewn in the coptic stitch with black linen thread and inside covers are black card stock. SIZE is 4” x 5.5”. Fun gift for the nerd scientist in your life.