Frequency range from 10 to 3500 MHz — it is unique for such a small size.
Record high sensitivity — 50 mV/m. It allows it to detect a radio bug with 5mW power from 5 meters, and detect a cell phone as far as 50 meters (164 ft).
Built-in antenna.
Very compact size— only 60 x 45 x 6 mm (2,36 x 1,77 x 0,24 in).
Low energy consumption.