The Philips HeartStart HS1 is an easy-to-use defibrillator. It is not only small and handy, but also has a voice function that will guide you through the process of treating a victim of suspected cardiac arrest. The integrated SMART pads get placed on the person’s skin and send data to the defibrillator, which then takes into account how the reanimation treatment is going. The AED can detect cardiac arrhythmias quickly and prevent cardiac death.