Philips HeartStart OnSite Trainer simulates how the HeartStart HS1 Defibrillator will operate during a real-life sudden cardiac arrest event. Clear, confident voice instructions that provide easy-to-follow directions and preconfigured scenarios make the training of the students easier. Equipped with a nylon carrying case, one set of reusable adult training pads and one external manikin adapter strip for use with standard manikins.