1、 bioelectrical impedance sensor

Blood flow monitoring can be realized through the biological body's own impedance, and converted into specific heart rate, respiratory rate and skin electric response index, which is a more advanced integrated biosensor with relatively higher accuracy.

2、 Optical blood oxygen sensor

The principle is similar to that of optical heart rate sensors, which also use optical sensors to emit light, but emit red and infrared light. The blood oxygen level is calculated by combining the difference in intensity between the emitted and received light with algorithms.

3、 Skin electric activity sensor

Dermatoelectric activity or EDA sensors are new features of wearable devices. It works with a heart rate tracker, ECG and skin temperature sensors measure pressure together. It can detect subtle electronic changes in skin sweat and help you relieve stress.

4、Capacitive touch sensor

Basic sensors are used to detect whether the user's fingers are in contact with the wristband screen, thereby achieving functions such as wake-up of the wristband and menu switching.

5、Skin temperature sensor

The skin temperature sensor detects slight changes in temperature to determine if you will fall ill like a fever or detect the onset of menstruation.

6、Barometers and Altimeters

By measuring atmospheric pressure and altitude, users can calculate information such as altitude and climb height.

Do you know all the sensors used for these?