ITEM NAME:15Pcs Mixed Aluminum Emergency Survival Whistle for Camping Hiking Outdoor Tool Descriptio n Description: Double-Layer Anodizing Treatment, Not Easy To Fade; Things Are Small And Strong, When You Are Traveling Outdoors, You Can Confirm The Orientation For You, Avoid Getting Lost, Find Companions, Etc. Help, You Can Hang On The Keychain As An Ornament; Elegant Personality, Whistle Blowing The Sound Is Sharp And Bright, The Aluminum Alloy Outdoor Survival Whistle, The Characteristic Sound Is Loud And The Transmission Distance Is Far; When Traveling Outdoors, You Can Confirm The Position For You, Avoid Getting Lost, Looking For Companions, Etc. Specifications: Material: Aluminum Alloy Color: Random Color.Everyone Doesn’T Feel Anything. Property: Whistle Lifeguard Whistle. Advance (V): ◠■■■(I?. Material: Aluminum Alloy. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. ).