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The oximeter is a personal medical product that is not familiar to everyone. It is a blood oxygen test device worn by the user on the wrist, nail or hand-held. It is mainly composed of a nail-type contact measurement part and a main control part. Among them, the nail-type contact measurement part detects the oxygen index in the user's blood by forming a measurement circuit by clamping the finger. The data is then transmitted to the control body for compilation and display.
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Practical wearing device can better know one's physical condition.
It's a little early red dot, but this is the first time I 've seen it. I 've seen it.
It's very convenient. I can measure it at home.
There are so many original works today...