The LIFEPAK CR Plus AED defibrillator is specifically designed for the first person at the scene of a sudden cardiac arrest. Designed for the minimally trained and infrequent rescuer, it is easy to use and understand in a cardiac emergency, where time is of the essence. The CR Plus is a fully automatic model. If the patient has a shock able rhythm the defibrillator automatically delivers a shock without any other user intervention required. Supplied complete with carry case, 2 Pairs Of Quik-Pak electrodes with Redi-pak pre-connect system, 1 protocol card, Ambu mask kit, operating instructions, charge-Pak (installed), and an eight-year warranty.