The ideal emergency whistle, it will not rust, has no pea to perish and is very small and light in weight. Also a covert carry being black. A perfect accompaniment to any survival kit. Weight for weight one of the best survival items you can carry.
Acme 636 Slimline Tornado marine safety whistle. Acme’s patented top venting system prevents accidental sound blocking when held in the hand during blowing. High Power, Slimline, Treble Frequency Whistle
Safety of Life at Sea International Regulations approved
Used by the Mountain Rescue Council
Official Ramblers Whistle
Dimensions: 5(L) x 2(W) x 1(H) cms