SOL Rescue Howler
Here's what other sites are saying:
Be sure you're heard with the extremely loud SOL Rescue Howler(TM) whistle.
When you need rescuing, one of the easiest ways rescue crews can locate you is by sound. The Adventure Medical SOL Rescue Howler emits a 110db shriek that will bring them in quickly. And the 2-pack has (you guessed it) 2 of them.
Developed exclusively for the Pocket Survival Pak(tm) by Fox 40(r) this new, ultra-light whistle is extremely loud. In fact, it tests at 122 decibels, exceeding SOLAS and U.S. Coast Guard specifications with its triple-frequency sound. It rises above man-made or river noise, and will carry for over one mile! The pea-less design means your whistle will never fail on you. Dual lanyard holes make attaching the Howler to your PFD simple.
This ultra-light whistle is extremely loud. Exceeds SOLAS and U.S. Coast Guard specifications. Triple-frequency with dual lanyard hole. Weight: .5 oz., Size: 2 1/8" T x .25" W per whistle.
- Vargo Outdoors