"IntelliSkin is a protective sleeve with military grade drop protection for the Samsung Galaxy S4 10.5"" featuring GDS Technology. The IntelliSkin sleeve has an integrated GDS connector molded directly into the skin, preventing damage to your device's charging port from repetitious docking. Molded ruggedized contacts on the exterior of the skin are also designed for repetitive docking in field applications. IntelliSkin is compatible with a variety of USB Type-C GDS Dock accessories that allow for charging and data syncing."