Does the smart watch (ring) have large radiation?

Jul. 27, 2021

The intelligent heart rate bracelet, blood pressure watch and other products developed by our control comply with a number of certifications of the European Union and the United States. In the daily use process, the bracelet uses ultra-low-power Bluetooth devices to transmit data, which will not produce harmful human radiation. Please feel free to use.

Why should the bracelet be tight when measuring heart rate?

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