Don't worry. Theory and experimental evidence both suggest there's no issue with those frequency bands. Those wavelengths can only cause heating, and that's at

Don't worry. Theory and experimental evidence both suggest there's no issue with those frequency bands. Those wavelengths can only cause heating, and that's at many orders of magnitude higher power than something used in a watch. at 2.4 GHz, the wavelength is ~12.5 cm, which isn't going to do anything to anything protein-scale in your body. Clinical evidence hasn't shown any association between negative health effects and EMF in that spectrum. The preponderance of conspiracy theory around 5G says more about psychology than physiology.