evidence: "[C]urrently no scientific evidence establishes a causal link between wireless device use and cancer or other illnesses. Those evaluating the potential risks of using wireless devices agree that more and longer-term studies should explore whether there is a better basis for RF safety standards than is currently used." [...] Bluetooth devices use RF waves in a similar wavelength range as those used for cell phones. But because the signals only need to travel a short distance (such as from the phone to a person’s ears), they can operate at much lower power levels than those used by phones, which in theory might make them less of a health concern. But as with other devices that give off RF waves, possible health effects from these devices cannot be ruled out completely at this time. [...] https://www.niehs.nih.gov/health/materials/cell_phone_radiofrequency_radiation_studies_508.pdf * Inclusion on this list does not imply endorsement by the American Cancer Society.