This amplified antennae receives all kinds of High Definition Television signals (HDTV), in superior resolution to deliver a picture to your TV that, in our tests, looked as good as cable! A tuning knob lets you adjust amplification to improve the picture quality of weaker stations that are farther away. Even if you have cable, this antennae will allow you to watch TV where you have no cable outlets like the patio, garage, etc. Installs without tools. Black. 7"W x 6"D x 11 ¼"T.