The ZOLL AED Pro is designed to perform in any environment. The AED Pro provides the ruggedness, portability and advanced functionality that professional rescuers and services require from an AED. Zoll AED Pro Features: • Real CPR Help for rate and depth of chest compressions during CPR using ZOLL's unique one-piece CPR-D-padz • ECG monitoring with 3-lead cable and high-quality display • See-thru CPR allows a rescuer to view a patient's underlying ECG rhythm while performing CPR • Any operating mode you choose: works the way you need it: Semi-automatic or automatic with manual override for fully manual • Built-in internal memory and external USB memory technology allows expanded data storage capacity and maximum flexibility for data management and transfer • Only AED in the industry to withstand a 1.5 metre drop test, making it suitable to withstand rough treatment typically found in an emergency medical environment • Exceptionally resistant to dust and water jets • Unrivaled battery options (long-life disposable or rechargeable) • 5 year warranty