The ZOLL AED 3® automated external defibrillator (AED) provides detailed CPR guidance with proprietary Real CPR Help® technology. More powerful full-color images and a CPR cycle timer, combined with voice and text prompts, help guide responders through the rescue. The Real CPR Help integrated, real-time CPR feedback tells and shows rescuers when they need to “Push Harder” or when they are doing “Good Compressions,” so they know when they are administering high-quality CPR.