Note: As we know、 radiation may cause many problem、 such as、 insomnia、fretful、headache and freckle. Using our this Anti-Radiation WIFI Antennas could reduce radiation. But it is not medicine that could cure insomnia、fretful、headache and freckle.Anti-Radiation WIFI Antennas Case For Wireless Router Repeater TV Set-top Box          Name       Anti-Radiation WIFI Modem Antennas           Model       For all wifi modem router           Material       pplastic and anti-radiation material           Working Principle       Anti-Radiation WIFI Modem Antennas can absorb electromagnetic radiation、 then convert into heat energy consumes it、 won't cause second pollution.    It reduce radiation by up to 94.4%、 successfully absorbing radiation form the wifi modem when it works and that signal is not negatively affectd           Size       lengh:200mm         external diameter: 16mm         internal diameter:14mm              Color       Light Grey、Black           Package included       only Anti-Radiation WIFI Modem Antennas、 Router is not included    Anti-Radiation WIFI Modem Antennas amount is chosen by you before ordering