In Samsung Galaxy Note 4 the company Samsung included two new sensors that seem to be interesting and quite useful on many occasions, they are only present together in smartwatches or fitness bracelets. First named sensor SpO2 has a dedicated section in the application S Health and he can measure the oxygen saturation of the blood by placing his finger near the camera Samsung Galaxy Note 4, the reading being not so easy, but probably quite accurate.
The second sensor is located in the same location and he should tell you if you are exposed to UV radiation (UlTRAvIOlET) strong when standing in direct sunlight, measuring them by pointing the case towards the sun. This is not the first time that Samsung implements this type of sensor in its own product, but the SpO2 it is implemented for the first time in a product of the Korean company.
Which of the two sensors do you think is useful and which one do you think you would use since iWatch it would include at least one sensor SpO2 ?
