Fitbit CEO James Park is rebuking a recent high-profit report raising health concerns in the use of wearable technology.

“In general, cell phones are definitely a very different beast than the low powered wearables,” Park told TIME. “The transmit energies are orders of magnitude higher. So if people are comfortable wearing Bluetooth headsets, I think wearables are even less of a concern because Bluetooth headsets are also close to your head. Wearables are not, unless you happen to sleep right on top of your wrists. For us we feel, again, whatever the studies might show, the overall health benefits of fitness trackers probably vastly overweighs the risks of any type of RF [radio frequency] issues.”

Earlier this week, The New York Times published an article—originally titled online as “Could Wearable Computers Be as Harmful as Cigarettes?”—that discussed the potential links between cellphone radiation, cancer and modern wearable devices. While the…