Fast Find 220 Personal Locator Beacon (PLB)
I had a FastFind 220. It is great. How do I know this ?  It was stolen in Hawaii. On two occasions the new owner was foolish enough to turn it on, resulting in two calls to my home, from USCG, and USAF rescue. Both reporting the position to within one or two houses in Princeville Kauai. Not quite the resolution the police wanted to justify a search. It works well !  I solo sail a lot and really like the size. I wear it on a lanyard.