-Signal jammer most is pluging in 110V or 220V power supply.Signal blocker not only can charge the battery but also block the mobile phone signal.
-Signal jammer is built-in lithium battery,you can take our portable hand-held signal blocker to coffee shop or cinema etc...
-Car GPS signal jammer can use car power supply,connect the cigarette lighter.
-Callboost Portable Hand-held Signal Jammer Is Very Suitable For Car And Home.
-Hand-held signal jammer can block 2G 3G 4G WIFI for home use.Just tell me which one you want to block.Callboost can customize for you.
-Hand-held signal jammer can block GPS signal for car use,safe and reliable.
-Callboost signal jammers have CE/FCC/SGS quality certification,ensure good signal blocking effect.
-Callboost signal jammers made with the most advanced technology of China,far better than other jammers.
-Callboost signal jammers have one year warranty,Callboost will provide professional after-sales customer service to everyone.
Send us inquiry to get code for checking the specifications.