We've talked about this, probably ad naseum, but it is important because it's the health of a horse and human at stake. Sort of hard to dismiss that as a non-issue.
We at Cytowave pride ourselves on the safety of our product. The output of our magentic coils is extremely low, around 34 gauss. Which is why the following blurb absolutely floors me:
The EPA (Environmental Protection Agency) in the U.S. and Sweden have made a cutoff point of 1 mG as acceptable exposure levels and recommend people avoid chronic exposure. This is why it is significant to note that some manufacturers advertise emitted magnetic energy of up to 19,200 gauss for their electromagnetic open field devices marketed for horses.
You can read the rest of the article so you have context and more reference points.