Initially you were talking about cancer, hence my non ionising reference. I don't say non ionising radiation cannot be harmful, I say it doesn't cause cancer.It depends on the power and frequency of the Signal, As well as length of exposure and distance to the signal. That’s why brought the microwave up when the Argument was made not to worry cause it’s non ionizing radiation. Non ionizing radiation can be harmful too.
And yes my cell might be worse that this thingy. I don’t stick that to on My head for extended periods of time either.
This device probably emits very little radiation, perhaps you can get same amount of radiation by talking on iPhone for few minutes.
Though I still wouldn't stick something on my forehead as I sleep, seems uncomfortable.