Whistle-type keychains are small items that combine practicality and decoration. They are usually hung on keychains. They are not only convenient to carry, but also can make sounds when needed, and are used for survival, outdoor activities or simple entertainment. This type of keychain is usually designed in the form of a whistle, and the material is mostly durable materials such as brass and aluminum alloy. Some are also equipped with additional functions such as LED lights and anti-lost devices, making it an indispensable gadget in modern life.

There are many types of whistle-type keychains, including retro brass whistles, bird-shaped keychains, brass retro faucet whistles, etc. The design has both traditional elements and fashionable creativity. These keychains are not only practical, such as survival tools and outdoor products, but are also often used as gifts or personal accessories to meet the needs of different consumers.