Features:

1. Realistic anatomy: tongue, pharynx, epiglottis, larynx, chordae vocals, trachea.
2. Oral and nasal intubation.
3. Lifelike material
4. Simulate head tilt to operate conveniently.
5. Directly observe the expansion of lungs and stomach by insufflating into the tube and stomach so as to verify the tube position is right.