The Lifepak CR2 AED is a portable and simple device to use that can be used by anyone. Simply opening the lid turns the device on. It features clear, calm step-by-step instructions, in English, to walk the rescuer through the steps to complete the rescue. Its volume will adjust based on the background noise. It is a Semi-Automatic device that requires the push of a button to administer a shock to the . It includes CPR Coaching which provides complete instructions for chest compressions on an adult as well as a child. There is also a metronome to help keep the chest compression rhythm. Features escalating power to make sure the patient gets defibrillated. The pads double as adult and pediatric at the touch of a button. The device comes with a USB cable that allows for its saved device information to be analyzed on a computer. This package includes a Semi-Rigid Carry Case that has a handle for easy transportation. This case also offers protection to your device as well as storage space for a spare set of pads and battery.