What is the temperature sensor allowance?

The sensor will indicate the temperature with the following allowance: +/- 2 degC max (typical +/-1 degC).

Most of the electronic components bear a commercial grade with a behaviour guaranteed between 0-40 degrees Celsius. Tests done have shown that the smartwatch still works well at -10°. If the smartwatch is exposed below -10 and over +50 degrees, it won’t break but the accuracy of the measurements is not guaranteed.

Moreover, in order to have the right temperature, it is needed not to wear the watch for few minutes before reading the temperature value. Otherwise, the temperature is not correct, because your wrist heats the temperature sensor.