wifi shield jam mer of mobile phone signal network dama ged gsm 2g 3g 4g lte 4gwinmax gps wifi lojack detector, Silver

lock image:when detects significant image,press and hold the (+) button in left side over 1.5 seconds to lock the image.when hear beep once,the image is locked. lock image:when detects significant image,press and hold the (+) button in left side over 1.5 seconds to lock the image.when hear beep once,the image is locked. lock image:when detects significant image,press and hold the (+) button in left side over 1.5 seconds to lock the image.when hear beep once,the image is locked. lock image:when detects significant image,press and hold the (+) button in left side over 1.5 seconds to lock the image.when hear beep once,the image is locked. lock image:when detects significant image,press and hold the (+) button in left side over 1.5 seconds to lock the image.when hear beep once,the image is locked..syi