Exclusive app: Download the exclusive app to set your own images, app gallery and mobile phone album patterns. Hybrid Material: Made of high quality PC+TPU+Glass materials, with delicate carbon fiber texture provides excellent hand feeling and prevents fingerprints. Slim & Not Slippery Grip: Ultra slim profile follows the original design of the phone, its slim shape will not make the phone bulky and will give you a secure hold. Smartphone Case: Smart ink screen projection phone case, energy saving and environmental protection without battery projection, no built-in battery, no need to connect cables, transmit data and content via NFC, screen to achieve a dual screen. Perfect Cover: All your phone's buttons and switches made of textured metal features and functions work smoothly, and convenient open access to ports and speakers.