Product Description 1. The ghost hunting EMF detector helps measure electromagnetic fields to identify devices that produce high emissions - Allowing users to make informed decisions about limiting exposure. 2. The detectors have been associated with places where unexplained phenomena have been reported as ghosts. K2 Ghost Hunter Detector operates on a single battery - Reports EMF measurements in the five milligauss range. 3. Measures a wide range of electromagnetic fields between 50 Hz and 20,000 Hz - It can play a mobile phone that is within a range of 60 cm. 4. Measure the electromagnetic level to protect yourself from overexposure to electromagnetic fields that can be harmful in the long term. 5. Convenient to use - One button operation to turn it on and off - Portable - Rugged - Reliable - Highly responsive with LED light scale that is easy to read in the dark and sunlight.