Extra Loud Sports Whistles Ball-Less Loud Crisp Sound Whistles Portable Emergency Whistle with Rope Mouthguard for Referees Competition Training Feature: 1. Professional Sports Whistle: Our referee whistle is perfect for professional sports referees, coaches, and players in football, basketball, volleyball, and other sports. It can also be used for outdoor survival and rescue situations. 2. Eco-friendly Material: Our survival whistle is made of environmentally friendly ABS and polymer materials, ensuring that it is safe and healthy to use. The materials are also durable and long-lasting, making the whistle a reliable tool for various activities. 3. Lightweight and Portable: Our extra loud sports whistle is lightweight and easy to carry, making it convenient to bring with you wherever you go. It can easily fit into your pocket or bag, allowing you to have it on hand whenever you need it. 4. Ball-less Whistle Design: Our loud crisp sound whistle uses a ball-less design, allowing for a loud and clear sound that can easily penetrate through noise. This design ensures that the whistle can be heard from a distance, making it ideal for sports games and outdoor activities. 5. Easy to Use: Our emergency whistle is easy to use, requiring only a small amount of air to produce a loud and clear sound. It has an ergonomic design that fits comfortably in your mouth, minimizing discomfort during prolonged use. Specification: Origin: Mainland China Model Number: Referee Whistle Product Name: Whistle Product material: ABS plastic Product color: gold, gold and silver (optional) Product size: 6cm/2.36in x 2cm/0.79in Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1 x Referee Whistles 1 x Lanyard 1 x Mouthpiece 1 x Clip 1 x Box