Physio-Control Stryker AEDs are the next generation of automated external defibrillators. They are designed to provide quick and easy CPR and shock delivery to victims of sudden cardiac arrest. The LIFEPAK 1000 is a portable, lightweight device that can be used by anyone, anywhere. The LIFEPAK CR2 is a smaller device that is perfect for use in public places or on small campuses. Both devices feature intuitive user interfaces and clear voice prompts to guide you through each step of the rescue process.