UST Marine StarFlash/JetScream Marine Combo (Yellow) Targeting system allows you to aim your signal with pinpoint accuracy and 122db whistle can be heard over most natural and man made noises Unbreakable, scratch resistant mirror floats as does this pea-less whistle that will never freeze up or rust Can be seen for miles away on a clear day, attached by lanyard to one of the loudest whistles available Made in the USA