ITEM NAME:12pcs 12mm Aluminium Mini Whistle Emergency Whistle Keyring Camping Su WEO PEO Descriptio n Description: Double-layer anodizing treatment, not easy to fade; small and sturdy things, when you are traveling outdoors, you can confirm the orientation, avoid getting lost, find companions, etc. Help, you can hang on the keychain as an ornament; elegant personality, whistle Blowing the sound sharp and bright aluminum 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.However, there is a problem in this. 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. ).