Portable, lightweight semi-automatic AED, 2.4lbs (1.1kg): up to 56% smaller than other portable defibs. Two-button operation with visual and voice prompts throughout the process of heart analysis and defibrillation. All the advantages of the 350P with the addition of the CPR advisor. The 500P is not based solely on the depth of compression but on real-time impedence changes measured through the electrodes. Impedence Cardiogram (ICG) analysis is embedded in the software, guiding the user in the required force and speed of compressions. Provides victims with the best chance of unimpaired recovery. Battery packs and wall cabinet are the same for both the 350P and 500P. Online certificated BLS/CPR and AED training for 2 delegates. Battery shelf life of 4 years from the date of manufacture. 8 year warranty. Includes Defibrillator with CPR Trainer, Adult Pad-Pak (Combined Battery and Electrode Cartridge), Carry Case, User Manual, Quick Reference Card, Internal Wall Cabinet and AED Prep Kit.