Lifesystems Safety Whistle Features:
The world's most powerful whistle, made from a toughened plastic material, the Lifesystems Survival Whistle is an essential part of any outdoor or mountain survival kit. A whistle can be used to alert people if you are in distress. The internationally recognised distress signal is 6 blasts of the whistle with a 1 minute break and then repeated. The reply is 3 blasts with the same pause.