At present, the blood oxygen test of Apple Watch is only used for fitness and health. The official statement is that the measurement results of blood oxygen app are not used for medical purposes, but only for general fitness and health purposes. That is to say, if you take it as an observation means of fitness and health at ordinary times, just look at the approximate value of blood oxygen, which can't be used as medical diagnosis data.

Blood oxygen refers to the oxygen in the blood, and the normal blood oxygen saturation of human body is above 95%. The higher the oxygen content in blood, the better people's metabolism. Of course, high blood oxygen content is not a good phenomenon. The blood oxygen in the human body has a certain saturation. Too low will lead to insufficient oxygen supply, and too high will lead to cell aging in the body.

Maintenance method of smart watch

1. Please disconnect the watch from the charger before cleaning, and do not directly wipe the watch screen with alcohol. After cleaning, be sure to dry the watch thoroughly with a dry cloth or a dry paper towel to avoid damage caused by condensation of water vapor remaining inside the watch.

2. Pay attention to keep the charging interface clean and dry during daily wear. In addition, consumers can regularly use a brush or cotton cloth stained with alcohol to clean the metal contacts of the charging interface and charging base of the watch, so as to avoid poor charging caused by dirty or corroded charging interface.

3. When wearing the watch everyday, please pay attention to keep the periphery of the SIM card slot clean and dry. If you want to open the SIM card cover, you must operate it under the condition that the back shell is dry, so as to avoid the water left in the back shell from entering the card slot and damaging the watch.