Super loud: The metal whistle has a large mouth design that allows air to pass very well, resulting in a very loud sound. When enough air is blown, the sound can immediately reach 120 decibels. Package list: you will receive 6 pieces of whistles, which are light and loud and are available in sufficient quantity for your daily use and replacement needs. You can also give it to your trainer friends. With Lanyard: Each metal whistle comes with a black lanyard. These lanyards are very convenient to use. You can hang it around your neck or wrap it around your wrist to make it easier to wear the whistle and prevent it from getting lost. High-quality material: the whistle is made of stainless steel, which is sturdy and durable, not easy to break or deform and can be used for a long time. Wide application: the trainer whistle is very suitable for outdoor training and is suitable for various outdoor activities such as football, volleyball, basketball, etc. Suitable for teachers, coaches, referees, police officers, cleaners and inspectors.