The SAR limit of USA (FCC) is 1.6 W/kg averaged over one gram of tissue. Device types XDKM(FCC ID: 2AI4T-XDKM00) has also been tested against this SAR limit. No BODY-worn use scenario ,this product can only be used by hand. This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.