Might be - research is ongoing, and technology which is currently sold might not be a safe as previously thought. :) You can usually check on the datasheets from e.g. phone manufacturers what the Specific Absorption Rate (SAR) values are and compare them to publicly available guidelines.
![Seungmin "그렇게, 천천히, 우리(As we are)" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/kAzmhLHePqU/mqdefault.jpg)
Pretty good looking
Wait, so bluetooth headphones with 20mT surface radiation are highly invasive?
Might be - research is ongoing, and technology which is currently sold might not be a safe as previously thought. :)
You can usually check on the datasheets from e.g. phone manufacturers what the Specific Absorption Rate (SAR) values are and compare them to publicly available guidelines.