I have a bunch of these scattered around - in my EDC kit, in the car, in my wife's purse, and other places that I can't think of at the moment. This is the ideal low tech "communication system" that gets attention in a hurry. I've also got several "spares" to loan out to others when the situation calls for it. Don't waste your money on the knock-offs - get the real thing. Cheap, extremely durable, super loud - highly recommended.
Rating:
[5 of 5 Stars!]