The Antop Antenna AT-408B is a Butterfly HDTV Antenna with a 40-mile range. It receives free Over-the-Air digital TV signals from major networks and supports HDTV and 4K ULTRA HD resolutions. The antenna features a multi-directional reception pattern, a UV coating, and a weather-resistant finish, making it suitable for outdoor installations on a wall, roof, balcony, or in an attic, as well as for mobile homes and RVs.