Simulates manual chest compressions for consistent and automated CPR.The flexible silicone suction cup adapts to various chest anatomical features, creating a vacuum and negative pressure with the patient’s chest during compressions to improve resuscitation success rates; manual-powered with an arched handle for a firm grip, allowing compressions and chest expansion without bending the arms; built-in pressure indicator guides operators to apply effective and appropriate compression and chest expansion—rescuers can instruct successors based on the indicator reading and tactile feedback to ensure correct chest rise; optional built-in metronome set at 100 or 120 beats per minute ensures reliable CPR rhythm; 80 compressions per minute achieve the effect of 100 manual compressions; increases resuscitation success rates by over 50%.