XIANQI Signal Whistle Double Tubes Emergency Survival Whistle Key Chain Material: Stainless steel Size: 5.7 * 1.8 * 0.8 cm Decibels: 150 decibels Color: silver+color Quantity: 2 pcs Package content: 2 pcs * SOS whistle 1. High Decibel Pronunciation: This stainless steel pipe has a double tube design. The oblique and rounded whistle can improve the efficiency of the whistle. The volume is 150 decibels and loud noises can be heard from a great distance. In an emergency, you can quickly grab the crowds attention anytime, anywhere. 2. Stainless Steel Material: This metal pipe is made of food grade 430 stainless steel, which can be placed in the mouth directly, which is safe and environmentally friendly. The pipeline sound cavity is not afraid of dust and water, is not easy to rust, and can be used normally even in harsh environments. 3. With key ring: This high decibel whistle also comes with a key ring. You can attach it to a lanyard or key to carry with you. The appearance is also very stylish and individual and combines beauty and function. 4. Stable riveting process: The rivet on the pipe not only looks beautiful, but also makes the pipe more stable and stronger overall, so that it has a longer service life and higher cost performance. 5. Wide range of uses: The whistle is suitable for survival and emergency situations such as camping, hiking, boating, hunting, fishing and outdoor activities. It can also be used for coach, referee, sport and herd training, bird or dog training, and can also be used as a decoration when not in use.