It sucks. Worst I've ever experienced. Although the images are good in less than 20 ft it blacks out around 28. Oversensitive contrast is the worst. Takes constant correction to be useable. There is no noise filters and it is super sensitive to interference.
My 3n1 is alot better but still suffers from contrast issue. Auto contrast does little or nothing. I'm a long time user and I'm just scratching my head.