POWERHEART AED G3 defibrillator manufactured by Cardiac Science Inc. is a dynamic and dependable full-rescue AED that features: Supports current AHA Guideline Protocols Automatically detects, analyzes, and delivers lifesaving defibrillation shock(s) to a cardiac arrest victim only when necessary. Performs daily self testing Four year full replacement manufacturer battery warranty AEDPLUS defibrillator manufactured by Zoll Medical Corporation is a durable, full-rescue and user-friendly AED for professional users that: Supports current AHA Guideline Protocols Documents the entire Chain of Survival - Starting with checking responsiveness - Also Covers the ABC’s of CPR Guides CPR with instantaneous feedback - Rate of compressions, depth & to push harder if needed Uses one-piece disposable electrodes guarantees accurate placement Includes ten lithium batteries that last up to five years and are available at camera stores Please call 781.915.8477 or e-mail m_Blaustein@CPRessentials.com for more information and current special pricing. Defibrillators are available in special packages along with all accessories and replacement materials. Please call 781.915.8477 or e-mail m_Blaustein@CPRessentials.com for more information and current special pricing.