The Powerheart® AED G3 Plus is the flagship Cardiac Science automated external defibrillator (AED) that features Rescue Ready®, RescueCoach™ and STAR® biphasic technology to make your rescue as simple as possible. Available in automatic and semi-automatic models, this AED is ideal for lay rescuers to use in public access defibrillation areas such as schools, athletic fields, and workplace environments.