The Zoll AED 3 BLS includes Color Touchscreen LCD display, Real CPR Help, CPR Stat-padz, and rechargeable battery.The Zoll AED 3 BLS is designed to simplify defibrillation and CPR for professional rescuers. It will guide you through the process of performing high-quality CPR and will, if needed, deliver a potentially lifesaving shock to the heart. Zoll's Real CPR Help technology helps guide rescuers in performing high-quality CPR in accordance with the most recent guidelines for depth and rate of compression.At 8 seconds with a fresh battery, the AED 3 is among the fastest at delivering a shock after chest compressions stop. Research shows that minimizing time to shock after the CPR cycle ends may improve survival.