transmitting or live cell phones, WIFI or any other wireless transmitter operating in the 0MHz to 6GHz range. Description: Discovers the hearing bug and cellular phone at further distance with advanced sensitivity tuner The detection distance: approx. 1Meter-10Meters (depend on the signal intensity) Switchable vibrate detection Distinguish camera, bug and cellular phone Internal Power: AAA battery 1.5V x 2 ( not included ) Frequency Display: LED Dimension: 87x53x16mm Color: SilverTOPGRADE