Sometime, we will see there are rectangular small black boxes are hung on arm of policemen ,security personnel and SWAT ,what is that ? Yes, that is handheld portable Jammer ,it is used to block cell phone signal transmission from base stations and mobile phones to make the phones stop working. How about it ? If you like,you can take one with you.So that it can provide you a silence environment and refuse boring calls.

Now, let us check if you need the signal jammer device or not ? If your work needs to be kept in top secrecy and your workplace is not stable ,maybe you need a handheld jammer. Here we want to introduce is a 3G 4G all cell phone jammer. It is specialized for 3G 4G all cell phone jamming. After power charging, you may take it away ,to your car ,office ,room,gym or pool,ensure what your said and what you done won’t not be divulged by 3G 4G all cell phones .

This is Latest 2G 3G 4G All Frequency Hand Held Portable Cell Phone Jammer Kit being invented, Besides jamming the 4G LTE and 4G Wimax signals at the same time, it also owns the ability to block CDMA, GSM, DCS, 3G signals as well. This is really the most perfect and powerful jamming device by now. Besides which frequency band you want to choose is depend on yourself, if you do not want to block one or two frequency bands you can just close them, keep others open.

And at the same time the cell phone jammer can still work as well to jamming other frequency bands signals. And depending on the cell phone signal length, the jamming range can reach 15 meters Max.What wonderful functions it owns!

Another big merit of this portable cell phone jammer you should pay attention is that with a car charger it can be used in the car which give you more convenience.

Besides it owns cooling fan, so the working temperature of it won’t be high. If so no matter in hot summer and cold winter it can works as well. In a word, this is really a perfect cell phone jammer no matter seen from the function, the price and the quality.

Are you attracted? If you are looking for a jamming device like this, do not hesitate, just take action and add this perfect portable cell phone jammer to your cart. Get more cell phone jammers, just come here www.jammerfun.com , you can see all kind of signal jammers with best price.