A loud whistle, made from a toughened plastic material, the Safety 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.
LOUDNESS: 108 dB.