Specifications: Cover interface standards: CDMA/GSM : 850 to 960MHz DCS: 1,805 to 1,880MHz PCS:1900 to 1990MHz 3G: 2,110 to 2,170MHz GPS : 1500 to 1600MHz LOJACK :167-175MHZY You can select five of above frequency bands you need in a jammer ODM and OEM orders are welcome Total output power: 2.5W ,Small size design so the temperature is a bit higher Jamming range: up to 20m, the jamming radius still depends on the strength signal in given area External Omni-directional antennas all the TX frequency covered down link only Power supply: 50 to 60Hz, 100 to 240V AC With AC adapter (AC100-240V-DC12V),3500mA/H battery Dimension: 119x74x29mm and not include antennas Full set weight: 0.75kg Advantages: Multiple bands cover cellphone, 3G ,GPS,LOJACK bands High output power Cooling fan inside , Could be used in car directly,With car charger and AC charger With Built-in Battery:3200mA/h,Charge full time about 4Hours,Working time:1-2Hours. Application Area: it can be applied at meeting rooms, conference rooms, trains, bus and more For some locations of special purpose such as hospitals, gas stations and more, Please do field test first to make sure no interference happened to the normal operation of their equipment and instrument Warranty: One year from delivery date.