ITEM NAME:Alloy Aluminum Emergency Survival WhistleOutdoor Camping HikingTool W/KeychainME Feature: Portable and lightweight Can still work even water in High volume, loud and clearly, easy to be noticed anywhere you are Dual hole design can bring you best performance Specification: Material: Aviation Aluminum Alloy Color: Gold/Silver (Random) Size: approx. 5.5cm x 1.5cm x 0.8cm(2.17" x 0.59" x 0.31") Package Included: 1 x Whistle.Material: Aviation Aluminum Alloy. 1 x Whistle. Size: approx. 5.5cm x 1.5cm x 0.8cm(2.17" x 0.59" x 0.31"). Color: Gold/Silver (Random).