Model 649 ACME Survival whistle
"Life saving/rescue whistle. S.O.L.A.S. approved, British Admiralty and NATO approved. For carrying dual frequency designed to stand out from background noise. Will not adhere to the skin in sub-zero temperatures. Tough construction, food grade shatterproof plastic. Easily blown, important if you are young, elderly, injured or cold."

Easy blown perfect safety whistle. SOLAS approved. For international safety. Recommended for all weathers, sea or land. Loud and far carrying this whistle is used by NATO Assualt-Troops.