The W8 is a compact yet powerful 4W WiFi signal management device that covers 2.4GHz, 5.1GHz, 5.2GHz, and 5.8GHz bands, designed to help create a more controlled and stable wireless environment with flexible, continuous operation in everyday settings.
https://www.signaljammerphone.com/W8-2.4Ghz-5.1Ghz-5.2Ghz-5.8Ghz-wifi-jammer-4W.html