Devices emitting minimal radiofrequency (RF) energy, as measured by the Specific Absorption Rate (SAR), are of interest to consumers concerned about potential health effects from prolonged exposure to electromagnetic fields. SAR quantifies the amount of RF energy absorbed by the body when using a wireless device. For example, a smartphone with a SAR value of 0.5 W/kg exposes the user to half a watt of radiofrequency energy per kilogram of body tissue.
The appeal of these devices stems from the desire to mitigate potential risks, even if the scientific consensus on the long-term effects of low-level RF exposure remains inconclusive. Historically, awareness regarding electromagnetic radiation and its potential impact has led to the establishment of regulatory limits for SAR values in many countries. Reducing one’s exposure is seen by some as a proactive step, contributing to a sense of well-being and control over one’s environment.
