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In order to effectively prevent the majority of children from suffocating in a closed car for a long time alone, I designed this car seat headrest with vents on the left and right sides, and collects air through three circular rectangular areas at the bottom. In addition, the headrest is equipped with an automatic heartbeat and oxygen content detection system, an automatic alarm system, an automatic oxygen absorption system and an oxygen storage tank. Can automatically detect whether a person is inside and judge whether to alarm and release oxygen to save people.