The radio frequency (RF) exposure standard for wireless devices employs a unit of measurement known as the Specific Absorption Rate (or SAR) which is a measure of the amount of radio frequency energy absorbed by the body when using a wireless device (e.g. mobile phones). The SAR limit adopted by the Federal Communications Commission (FCC) and Industry Canada (IC) is 1.6 W/kg averaged over 1 gram of body tissue.
The chart below lists the SAR for each Palm device.
SAR tests are conducted using standard operating positions with the wireless devices transmitting at its highest certified power level in all tested frequency bands. While there may be differences between the SAR levels of various wireless devices and at various positions, they all meet the government requirement for RF exposure.
For body-worn operation, the mobile phone meets FCC RF exposure guidelines provided that it is used with a non-metallic accessory with the headset at least 10 mm from the body. Use of other accessories may not ensure compliance with FCC RF exposure guidelines.
More information on SAR can be found on FCC website, https://www.fcc.gov/consumers/guides/specific-absorption-rate-sar-cell-phones-what-it-means-you