Tactical Infrared Chem Light. A must if out lost in the field alone , only visible buy infrared cameras/systems…. This is not a rave item and may distort camera pictures if held to close, can be seen buy police helicopters or military cameras, only to be used in the pure meaning of making one’s self visible for pick up or help from relevant authorities or services, happy buying who ever you buy from on eBay -stay strong 💪 stay safe everyone