i HIGHLY doubt they are legal.

Jammers work on a system that emits to screw up what they are sending.

The FCC or whatever regulates Anything that emits waves. and in addition with that if its not registered then its not legal. and a cop knowes when you use it when their gun spazs and gives an messed up reading. you get pulled, searched, the find it, you get screwed for it.

im not sure about FL but the other places i know it is.

money is better spent on a V!