Innovative design: Consists of two parts, frame and back cover. Each part is made of one block of aluminum materials. Feels comfortable and looks cool. Material: Made from aviation aluminum metal. Heat radiation faster, lightweight, and extremely strong hard. Perfectly protect your device from accidental drop from your hand to damage and scratch. Assembly: Put your phone between frame and back cover then please lock the screws on the four corners of the case, easy to assemble. Application: The case is size of 6.2inch X. 2inch X 0.39 inch, compatible with iphone 7+. Conveniently touches all buttons/keys and screen on your device.