The Defibtech AED (The Defibtech Lifeline AED) is a revolutionary new semi-automatic external defibrillator, manufactured using the most modern automated production and testing equipment available. The Defibtech Lifeline AED uses advanced biphasic technology — including the most studied biphasic shock waveform — and automatically adjusts the shock delivery to the person’s individual needs. When a life is hanging in the balance, use a Defibtech AED - The Defibtech Lifeline AED!