The whistle has wide using applications. If you are an outdoor activities fan, and you need a whistle, then our premium whistle with hanging rope will be your best choice. The high decibel whistle is perfect for your outdoor activities. Come and choose one for youFeatures-Color: Golden-Material: Brass-Size: About5.50X1.00X1.00cm/2.16X0.39X0.39inch-Made of premium quality brass material, safe, durable and permanent.-The little whistle is really deafening loud and can still be heard from distance.-The price we offered is reasonable and affordable for you to purchase.-For referee, teachers, training, self-defense, survival, emergency, herding, training bird or dog, etc.-Best gift for your teachers, referee, teachers or your friends who are a big fan of outdoors activities.