Enhance your sports training and officiating experience with this professional-grade whistle, designed for clear, high-frequency sound and superior durability. Crafted from high-quality ABS resin combined with macromolecule materials, this whistle is non-toxic, tasteless, and environmentally friendly, ensuring safe and long-lasting use in various sports settings. Key Features: · Non-Core High-Frequency Design: Produces a clear, resounding sound without the typical core whistle noise, delivering strong whistle permeability and high decibel output for effective communication on the field. · Double Air Chamber Structure: Engineered with a dual air chamber for easy blowing and powerful sound projection, making it ideal for referees and trainers who require a loud, penetrating whistle. · Adjustable Nylon Hanger: Comes with a durable nylon hanger featuring a double ball fixed length design and a convenient buckle, preventing loss or accidental drops during intense activities. · Extended Service Life: The whistle’s original denture is extended to enhance durability, providing reliable performance over time. · Versatile Sports Use: Perfectly suited for basketball, football, volleyball, and other sports, making it an essential accessory for coaches, referees, and trainers. Specifications: · Item Type: Whistle · Material: ABS Resin · Weight: Approx. 43g / 1.5oz Package Includes: · 1 x Professional Sports Whistle This whistle combines ergonomic design and premium materials to deliver consistent, loud signals in any sporting environment. Its robust construction and thoughtful features make it a dependable tool for referees, coaches, and sports enthusiasts seeking clear sound and durability.