The Doro 780X IUP is the same as the Doro 780X but with the added feature of automatic fall detection. This “man down” function provides isolated user protection (IUP) and combines with a safety timer and an assistance button for sending a GPS alarm whenever required for maximum user safety. Like the Doro 780X, the IUP model is water-resistant and features 3 large keys to keep your most trusted contacts on speed dial.