Feature: 1. Physical Detection: This detector has a strong magnetic locator in it, making the detector error free and highly accurate. 2. Accurate Detectation: This detector uses radio wave detection, faster search signal, stronger anti interference, unlock orientation distance detection more accurate. 3. Small And Portable: This detector is compact and lightweight, which is ideal for carrying with you when you go out, and very convenient. 4. Long Endurance: The battery life of this concealed device detector is long lasting and can support the detector to work continuously for 4 to5 hours. 5. Simple to Operate: This detector is composed of the latest SMD components and integrated circuits, easy to install and use stable performance. Specification: Item Type: Anti Recording Detector Material: ABS, Metal Frequency Range: 1MHz-8000MHz Detection Dynamic Range: ＞73DB Detection Sensitivity: ≤0.03mv Detective Range: 2.4G: 10m² (Standard 10mw) 1.2G: 15m² ( Standard 10mw) Cell Phone Band 2G, 3G, 4G Signal: 15m² Battery: Polymer Lithium Battery x 1 (1000mAh) ( Shipped With Built In Battery ) Working Time: 4-5 Hours Continuous Operating Current: 60-110ma Signal Detection Range: 10m Optical Lens: Special Dedicated Filter. Package List: 1 x Anti Recording Detector1 x Antenna1 x Magnetic Field Probe1 x Charging Cable1 x Instruction Manual Note: All antennas must be installed in pairs before using the device, otherwise it will damage the device. Antenna number can refer to the manual.