The SOL Rescue Howler proves that big sounds come in small packages. This little whistle can blare a whopping 110dB signal at 3 separate frequencies, so rest assured, you’ll be heard.
Why choose this whistle:
Next level whistle: Nitecore NWS10 Outdoor Emergency Whistle
When using a whistle to signal for rescue, the universal distress call is three consecutive blasts separated by a second of silence.