Features：
1. Executive standard: in comply with the latest AHA CPR& ECC Guidelines
2. Half body, obvious anatomical structure and realistic texture
3. Pupils: one dilated one contracted
4. Manual carotid pulses through pulse bulb
5. Chest compression:
① Place right position, green light
② Place wrong position, red light
③ Compression depth ( ≥ 5cm，≤ 6cm),green light, with correct beeping sound
④ Compression depth (＜ 5cm),yellow light, with alarm beeping sound
⑤ Compression depth (>6cm),red light, with alarm beeping sound
6. Ventilation:
① Breathing volume (500ml-600ml), green light, with correct beeping sound
② Breathing volume (＜ 500ml), yellow light, with alarm beeping sound
③ Breathing volume (＞ 600ml), red light, with alarm beeping sound
④ Air into stomach, red light, with alarm beeping sound
7. Airway status indication
8. Compression frequency: 100-120times/min, compression and ventilation ratio 30: 2