Product Description This Portable 4.2W 6 Antennas GSM 2G 3G 4G Cellphone Jammer & WIFI 2.4GHz Jammer up to 30m (JM1701123) is one of our the best portable high power models with 6 bands to jam all types of Android phones, Tablets, Smart Phones, iPhones, Win phones etc. that use 2G, 3G, 4G, WiMax, WIFI, Bluetooth wireless signals popular in 2016 and in years to come. This portable Cellphone WiFi Jammer outputs 4.2W power and comes with 2.5dbm high gain omni directional antennas. The shielding range reaches 5-30 meters, depending on the signal strength in the given area. It can block GSM 2G 3G 4G Cellphone signal and WIFI 2.4GHz signal at the same time. Or you can turn off any single band without influencing the other bands operation. Also, you will be worry free of the uplinks with all TX frequency covered down link only. It won't interfere with uplink station signal either. Owning built-in 8000mA/H Ni-Mh battery, WiFi phone Jammer can be taken outside for 3 hours non-stop use, and actually will not be overheated since it has good cooling system with heat sink and fan inside. And it support use while battery charging, but don’t suggest use like that always. Moreover it support powered by car cigarette charger.Specifications Affected FrequencyRanges:    Europe type frequency 6 bands :    1.790-850MHz 4G Low 4G WiMax   0.7W     2.850-960MHz GSM CDMA RC868   0.7W     3.1805-1990MHz 2G DCS, GSM1800, PCS, CDMA1900  0.7W     4.2110-2170MHz UMTS, 3G, WCDMA,, CDMA2000  0.7W     5.2400-2500MHz WiFi/Bluetooth  0.7W     6.2620-2690MHz 4G WiMax2, 4G LTE  0.7W    American type frequency 6 bands :     1.700-803MHz 4G Low 4G WiMax    0.7W     2.850-960MHz GSM CDMA RC868    0.7W     3.1805-1990MHz 2G DCS, GSM1800, PCS, CDMA1900   0.7W       4.2110-2170MHz UMTS, 3G, WCDMA, CDMA2000  0.7W     5.2400-2500MHz WiFi/Bluetooth   0.7W     6.2500-2690MHz 4G WiMax2, 4G LTE   0.7W Total Output Power:Up to 4.2W Power Supply:AC100-240V and DC12V Car Charger Antennas:6x 2.5dbm High Gain Omni Directional Antennas SMA-Type Connector Dimensions:177.5 x76.5x36.5mm Weight:Approx. 1.2Kg Operating Temp:-20oC - +50oC Humidity:5% - 95%Accessories Portable Cellphone WiFi Jammer AC Charger Car Charger Antennas  This product is in stock now, we guarantee shipping within 24 hours and offer 1 year warranty for all our products. Brought to you by the leader in security devices and best Signal Jammers, Jammerall.Important Notes for Jamming Distance: The jamming distances we mentioned on website are for customer's reference only. The actual jamming distance will be varied depending on the signal strength and the use location and if full charges, etc.Important Notes for Portable Jammers with No Cooling Fan: Do not use the jammer when it is charging, or it will burn the jammer as it has no built-in fan. If because of this factor due to the broken of the jammer, the customer will lose the authority of free repairation .