Product Description This 8 Bands Cellphone Jammer blocks all GSM 3G CDMA 4G frequencies,it also blocking WiFi Lojack and GPS L1, best choice for agaist GPS tracking,Lojack tracking,Cellphone monitoring when your on car or office meeting,avoid your kids not internet surfacing at night.Multi-band cell phone signal jammer can work to isolate the specified unwanted frequency bands when there is the demand for signal free zone. The 8 Bands GSM CDMA 3G 4G GPS L1 WiFi Lojack Cell Phone Jammer,Blocking GPS Tracker,WiFi,Lojack and 4G mobile phone all in one (for Europe). Selection Frequency is one of the multifunctional signal blocking units available with well-built compact construction and delicately combined functionality.The powerful jammer has a wide affected frequency ranges to include CDMA/GSM, DCS/PCS, 3G, 4G LTE, 4G Wimax and GPS/Wifi. It also has a jamming range up to 15m, depending on the signal strength in the given area. Within the range, just turn on the jammer, all wireless connection to 2G, 3G, 4G or Wifi,GPS network will be disabled at the same time. Also, the jammer is a selectable unit. In other word, user can choose to allow operation of one or a few of frequency bands. Adjustment of ON or OFF any of the single bands will not cause any disruption to the operation of others.The jammer is flexibly applicable for its portability and ease of charging. It can be applied at meeting rooms, conference rooms, trains, bus and more location as you want, powered by universally using AC adapter or by 4000mA/h rechargeable battery. The well-designed cooling system will further ensure you a lasting service time.Jamming frequencies:GSM900 and GSM1800 in EuropeCDMA850 in both USA and Europe4G in EuropeEffective Frequencies:GSM: 925MHZ - 960MHz    DCS: 1805MHZ - 1880MHz  3G:  2110MHZ - 2170MHzGPS: 1570MHZ -1610MHZWIFI: 2400MHZ - 2500MHZLOJACK: 168MHZ - 178MHZ4G: 790MHZ - 862MHZ4G: 2620MHZ - 2690MHZSpecifications:Working Radius: 15 metersOutput power: 4W Power Supply: can work via battery and two power adaptersBattery Information: Lithium-ion 3.7V 4000mABattery Working Time: 2 hours maximumAdapters Details: AC 110~250V to DC 12V, car 12V to DC 12V, both 4000mAAntennas Details: high-tech rubber (8 units)Dimensions Of Device: 130x80x38mm(not include antennas)Weight Of Product: 800gPackage List:1 * Portable Signal Jammer1 * AC adaptor1 * Car adaptor1 * Antenna1 * User ManualAdvantages:Multiple bands High output power Cooling fan inside , Could be used in car directly,With car charger and AC chargerWith Built-in Battery:4000mA/h,Charge full time about 6Hours,Working time:1-2Hours.Application Area:it can be applied at meeting rooms, conference rooms, trains, bus and moreFor 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 instrumentFully protected against:iPhone3,iPhone4/S,iPhone5/S/C,iPhone6/plus/S/CiPad2/3/4All Sumsung 3G 4G cellphoneHTC cellphoneMoto cellphoneAll other cellphonesGPS TrackerWiFi DeviceLojack Tracker