CT-1040H-DJ Anti UAV Drone RC GPS 2.4Ghz 5.8Ghz 28W Handheld wearable Jammer up to 500m Designed to be compact for easy carrying of police and military on terrain use, CT-1040H-DJ Wearable Handheld portable Jammer is specialized to protect soldiers against commercially available drones used by enemy forces for reconnaissance or as weapon delivery systems. It is fully autonomus with built in antennas and battery for 40 min operation. It is best suited for military special operations teams, police, security forces that are deployed in different situations Specialized to block 2.4Ghz, GPS, and 5.8Ghz signals that use most of commercial UAV Drones for their remote controls.. The effective blocking range is up to 500 meters. The jamming distance always varied depending on the signal strength and location Do not blocking GSM Cell phones.