21 antennas network gsm lte 5g gps wifi lojack tracking gps signal mobile phone signal jam mer, Silver

small volume:the hand-held design can be mastered with one hand, slightly larger than the commonly used walkie talkie
portable:21 channel signal jam mer can be put into a pocket or satchel, and can be hung or worn on the arm and belt big power:wireless signal jam mer can effectively shi eld all commonly used mobile phone signals and wifi signals within a radius of 10-30 meters
stability:exquisite ventilation and heat dissipation design, even if the machine is turned on continuously for 2 hours, battery powered:safe lithium iron phosphate large capacity battery, can be recharged and used repeatedly, and the battery can be quickly removed and replaced
speciality:with band selection switch, signal shie ld can selectively shie ld mobile phones of different systems.syi