Table 2.

List of elements in the power consumption of wearable electronics [27,50,51,52].

Name	Classification	Power Consumption
Data processing	MCUs/SoCs	0.507 µW~216 µW
	ADC/DAC	15 µW~1.95 mW
Low-power sensors	ECG	>5.2 mW
	PPG	68 µW~4.8 mW
	Temperature	82 µW~241 µW
	Accelerometer	0.35~0.9 mW
Wireless transmission	Bluetooth, WiFi, NFC/RFID	25 µW~200 mW
Display	OLED, LCD	102~103 mW
	Low-power display	10−3~10−1 mW