Specification Brand : cardyven BulletPoint1 : Wide Applications: Emergency whistle is applicable to emergencies in camping, hiking, fishing, boating and other outdoor activities, as well as dog training, school sports, lifeguards, etc. The whistle is a must-have for emergencies and outdoor adventures BulletPoint2 : Be Heard and Rescued: Double tube survival whistle requires your lightest blow to work and produce loud attention grabbing sound. Lifeguard safety whistle comes with a strong metal keychain for convenient attachment to your keys, backpack, or hiking equipment BulletPoint3 : Aluminum Alloy Material: The outdoor camping whistle is made of aluminum alloy, which is anti wear, anti fall and sturdy. Survival safety whistle is lightweight and sturdy, built to withstand outdoor conditions BulletPoint4 : Loud Voice: Safety survival whistles, double tube high frequency whistle has loude voce, and can be heard even in the distance, proving highly efficient and saving your breath in case of emergency or rescue situations BulletPoint5 : With A Key Chain: Emergency survival whistle with keychain is easy to carry and store with a key chain. Portable, easy to carry, loud and sturdy, the safety whistle is an essential tool for outdoorsy men and women Color : Silver Department : unisex-adult ItemDisplayDimensions_Height : 0.39 inches ItemDisplayDimensions_Length : 1.97 inches ItemDisplayDimensions_Width : 0.39 inches ItemDisplayWeight : 0.03 pounds ItemName : Emergency Whistle, 10Pcs Survival Safety Whistles for Outdoor Camping Aluminum Alloy High Frequency Survival Whistle with Keychain (Silver) ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 12 centimeters ItemPackageDimensions_Width : 10 centimeters ItemTypeKeyword : survival-signal-whistles Manufacturer : cardyven Material : Copper ModelName : cardyveng4b6cu3t1a-13 ModelNumber : cardyveng4b6cu3t1a-13 PartNumber : cardyveng4b6cu3t1a-13 ProductDescription : Wide Applications: Emergency whistle is applicable to emergencies in camping, hiking, fishing, boating and other outdoor activities, as well as dog training, school sports, lifeguards, etc. Be Heard and Rescued: Double tube survival whistle requires your lightest blow to work and produce loud attention grabbing sound. Aluminum Alloy Material: The outdoor camping whistle is made of aluminum alloy, which is anti wear, anti fall and sturdy. Loud Voice: The double tube high frequency whistle has loude voce, and can be heard even in the distance. With A Key Chain: The emergency survival whistle with keychain is easy to carry and store with a key chain.