Enhance your sports training and officiating experience with this professional-grade whistle, designed for clear, loud, and penetrating sound performance. Crafted from durable ABS resin combined with macromolecule materials, this whistle is non-toxic, odorless, and environmentally friendly, ensuring safe and long-lasting use. Its innovative non-core high-frequency design eliminates core whistle noise, delivering a crisp and resounding tone that carries over long distances, perfect for basketball, football, volleyball, and other sports. Key Features: · Non-Core High-Frequency Design: Produces a clear, strong, and high-decibel sound without the typical core whistle noise, ensuring your signals are heard distinctly. · Double Air Chamber Structure: Enables easy blowing with enhanced volume and sound penetration, making it ideal for professional referees and trainers. · Adjustable Nylon Hanger: Features a double-ball fixed hanger with an adjustable length, allowing secure attachment and preventing loss or accidental drops during active use. · Durable and Safe Materials: Made from ABS resin combined with macromolecule materials, the whistle is non-toxic, tasteless, and environmentally safe for everyday use. · Extended Mouthpiece Design: The original denture is extended to increase service life and comfort, suitable for various sports including basketball, football, and volleyball. Specifications: · Item Type: Whistle · Material: ABS Resin · Weight: Approx. 43g / 1.5oz Package Includes: · 1 x Professional Sports Whistle This whistle is an essential tool for coaches, referees, and sports enthusiasts seeking reliable, high-quality sound performance combined with comfort and durability. Its advanced design ensures your commands and signals are heard clearly, enhancing game control and training effectiveness.