Features:

1. Pupil demonstration: one mydriasis and the other normal

2. Simulate standard open airway 

3. Simulate free movements of upper limbs

4. External chest compression: display device and alarm device

5. Artificial respiration (Inhalation): display device and alarm device

6. Operating period: Ratio of compression and artificial respiration:

   30:2 (one or two persons), complete 5 cycles.

7. Compression frequency: 100 - 120 times/minute

8. Compression depth: 5-6cm

9. Squeeze the bulb manually to simulate carotid pulse