Unicorn from Sigma is a steel mid-tower case with a dark transparent side window and four 5 ¼" bays, two external 3 ½" bays, five internal 3 ½" bays for hard disk drives (four available in a removable hard disk drive cage), four fans (two 80-mm and two 120-mm) and aluminum door. Let's take an in-depth look on this new release from Sigma.