Product Description Looking for a cell phone jammer that can both the signals of the 4G LTE and 4G Wimax, this 3W Portable 3G Cell Phone Jammer & 4G Jammer (4G LTE + 4G Wimax) can be your first choice. This is a jammer device that owns both good design and working ability. First, you can see that it is a multiple bands cover cellphone and including 4G bands, and its affected frequency ranges including CDMA/GSM, DCS, 3G, 4GLTE and 4G WIMAX. And with the design of high power the jamming distance of this device can reach 20m depending on the strength of the signal in the given area. And with the design of cooling fan inside, it won’t cost high temperature when working. And by using the car charger it can be used in the car directly, which is really convenient for people when they are driving cars. Besides the 3200mA/h built-in battery is used as its power supply and which need 5 hours to get full charged and support working for 1 to 2 hours. Such a device can be used in many places such as the meeting rooms, conference rooms, trains, bus and so on. But if used in 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. If you are interested in such kind of jammer device just come here. And if you have requirements about selecting the above frequency bands please also contact with us, as we can OEM and ODM the jammer device that you required for you.Specifications Affected Frequency Ranges: -CDMA/GSM: 850 to 960MHz -DCS:1,805 to 1,880MHz or DCS/PCS:1805 to 1990MHz -3G:2,110 to 2,170MHz      -4G LTE:725-770MHz    -4G WIMAX:2345-2400MHz  or  2620-2690MHz You can select five of above frequency bands you need in a jammer ODM and OEM orders are welcome Total output power:3W 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),3200mA/H battery Dimension:120x74x29mm and not include antennas Inner box dimension:220x202x65mm Full set weight:0.75kgAccessories AC Adaptor Car Adaptor Antennas