Whistles (Silver), Metal Whistle with Wheel, Loud High-pitched Whistle, Metal Whistle with Detachable Nylon Collar for Sports Coaches, Basketball, and Football. Premium Quality: High-quality stainless steel, durable and easy to use, much better than plastic whistles. The solid stainless steel whistle will not rust or corrode easily. Portable and sturdy metal whistle for long lasting durability. Coach whistle with black necklace for hands-free use. Free Your Hands: Each whistle comes with a black necklace, you can easily hang it around your neck or on a wall mount, freeing your hands. Loud High-pitched Sound: The sound is loud and high-pitched, you can quickly grab the audience's attention at any time. Multiple Uses: An indispensable metal whistle for camping, hiking, emergencies, first responders, etc. It can also be used for sports referees, coaches, schools, dog training, and sporting events.