Weighing just 38g. Previous military technology for locating hidden wired and wireless cameras is now available for the everyday consumer. This hidden camera finder does not rely on detecting the RF signal from a wireless camera or the oscillator frequency radiated by a wired camera, it uses an array of ultra bright LEDs that create a strong reflection from a camera's lens that is easily detected .Unique to this device, users simply look through the view-window to identify hidden cameras lens in a room. And we will supply chargeable battery for this detector.