Anti-car Positioning GPS Detector Wifi Signal Detection Anti-steal Surveillance Hotel Camera $ 11.30 Product information: Product size: 93.8 * 38 * 14.5mm Product weight: 36G Charging interface: Micro USB Working hours: 10 hours Antenna gain: -56db Product battery: 3.7V/180mAh Sensitivity: adjustable in 3rd gear Frequency: 1MHz-6.5MHz Signal detection range: 5cm-3m Optical lenses: special and specialized filters Laser detection range: 10cm-10m Product material: ABS Packing list: Camera detector * 1 USB*1