Uxcell 4Pcs Survival Whistle Double Tubes Whistles Super Loud for Outdoor Dark Blue

The high-frequency dual chamber resonance whistle is a common outdoor supply, it is small and easy to carry. Good for use when out camping, hiking, traveling, fishing, hunting, boating, etc. Made of aluminum alloy material ensures the whistle is strong and durable. The surface is anodized for color formation, which is not easy to fade, exquisite, and beautiful. Lightweight enough. With a keyring, portable and easy to carry. The double tube whistle is blowing easily, providing a louder and clearer sound, that can be heard from a far distance. No moving parts, water-resistance, that can use at all-environment all weather. This whistle can be used for any type of outdoor activity. In addition, it can also be used as a referee's whistle, a dog's whistle, and a warning whistle for security personnel. It can be hung on the backpack and belt or can be hung on the neck with a rope so that you can whistle quickly. Due to the different effects of shooting light and screen equipment, the color of product pictures may be slightly different from that of real objects.