Army Navy Gear's Emergency Whistle High Decibel is designed to be extra loud for signaling rescue teams who may be searching. Also great for personal safety and public safety use. 

• Double Barrel Whistle Can Emit Up To 118 Decibels Allowing The Sound To Reach Far Distances
• Built With A Key Clasp And Lanyard So You Can Easily Keep It On Your Belt, Key Ring Or Backpack
• Emergency Whistle Can Also Be Used For Security Purposes As Decibels Reach Above Average Range
• Perfect For The Great Outdoors And Survival Situations
• Aluminum Alloy Build Provides A Strong Yet Lightweight Lasting Material
• Compact Sizing Of 2.25 Inches X .5 Inch X .25 Inch