Features:•Conducts daily, weekly and monthly routine self-checks. Additional checks conducted when the device is initially switched on for guaranteed performance when required • Fully automatic operation automatic once defibrillator pads are attached • Visible Readiness Display •Industry leading 8 year warranty on the AED •Built in safety protocols to shock only if required by the patient •Initial shock delivered at 200 joules which automatically escalates each shock •Directs up to 360 joules if required on difficult to defibrillate patients •Audible metronome and CPR coaching guides users during emergency situations •Clear Voice technology listens to the level of background noise and adjusts the volume accordingly •Layered design with easy to follow pictorial instructions •Average of 103 full discharges when fully charged (800min operating time)