Come and see our amazing products. This survival whistle is made of sturdy aluminum alloy, durable and non-toxic material, not easy to break, fade or corrode. Aluminum whistle is waterproof, rust-proof and can be used for a long time. Emergency situations whistle is small and handy, but it can make a loud and clear sound, about 120 decibels. The loud sound can be heard within 150 meters, which is very useful in various emergency situations, so that others can quickly confirm your position and rescue. Pls confirm with us about the packing info, stock color and exact production time before placing your order.