This 60-piece aluminum emergency whistle set delivers a powerful 120dB loud sound for long-distance communication and emergency alert situations. Each whistle is made from durable aluminum alloy, lightweight, rust-resistant, and built for long-term outdoor use. The keychain design allows easy attachment to backpacks, keys, or gear for quick access. Ideal for camping, hiking, boating, sports coaching, school safety, and survival kits. A reliable safety tool for both personal and group use.