new upgrade x12 gsm 2g 3g 4g 5g wifi signal lojack security surveillance, Silver

x12 handheld mobile jam mer works with all frequency bands used by the wireless devices around you except low frequencies and 4g band when you have such device in your hands, there is almost nothing that can hurt your privacy or break the secrecy of your location within 15 meters radius around you. even the most advanced tracking, eavesd ropping, wiretapping and other anti privacy technologies are unable to work properly when they are in the working range of this product.syi