Portable Mobile phone / GPS / Video / Wi-Fi jammer could block the signals up to 10 meters working radius at a best performance and designed as pocket-sized, hand-held mobile device, to prevent unwanted wireless radio signal transmitting at short distances, such as  cellular phone, GPS or wireless camera.  It has an internal, rechargeable, high-capacity battery.

The portable jammers are now well welcomed by people because of the convenience and advantages. For example, during an important business meeting or presentation, how to let the client keep focusing and paying attention in your report and not interrupt by phone call or SMS.