This 4-wire pocket jammer is the latest miniature hidden 4-antenna mobile phone jammer. The pocket design looks like a mobile power bank for blocking some remote bomb signals. It can be used to protect VIPs and groups, military security forces, SWAT teams, Bomb squads, counter-terrorism forces, anti-drug forces, anti-riot forces, anti-explosion operations teams, checkpoints, hostage negotiations, border controls, cars, trains, buses and more locally, long-term engaged in these more hidden activities, built-in nickel metal hydride 2000mAH battery can work for more than 8 hours, this jammer is worth starting.