What is one of the hallmark features of the Zoll AED?

One of the hallmark features of the Zoll AED is its ability to offer real-time feedback on compression depth and rate during CPR. This feature is crucial because it enhances the effectiveness of CPR, enabling the rescuer to adjust their technique based on immediate feedback. The Zoll AED provides visual and audible prompts, ensuring that compressions are provided at the appropriate depth and speed, which is essential for maximizing blood flow and improving patient outcomes during a cardiac emergency. This capability distinguishes Zoll AEDs from many other automatic external defibrillators, which may not provide such detailed feedback, thereby supporting better performance in resuscitation efforts.