The Half Body CPR Training Manikin is designed to provide CPR operation practice tp medical students with a realistic experience. It features a simulated standard airway opening and allows for external breast compression with the correct compression intensity (5-6cm). The manikin indicates the correct compression position with a yellow light, correct compression depth with a green light and buzz prompting, and excessive compression with a red light and alarm buzz. For artificial respiration practice, students can observe the chest waveform to judge inhalation volume. The manikin operates in training mode and is powered by batteries. Provided with printer also.