Durable stainless-steel referee whistle with two-chamber design and integrated soft lanyard — built for clear, reliable signaling in coaching, officiating and emergency use. Key benefits Built to last: High-quality stainless steel construction with rounded edges and precise workmanship. Designed to withstand heavy use and harsh conditions without deforming or losing sound quality. Loud, clear signal: Innovative two-chamber design produces a penetrating, widely audible tone that carries over long distances. Ideal for attracting attention and delivering unmistakable signals on busy fields or in noisy gyms. Hands-free comfort: Integrated lanyard made from soft material reduces skin irritation and allows comfortable, long-term wear so you can keep the whistle handy without distraction. Compact and portable: Lightweight, small size fits easily in a pocket or kit. Quick to deploy for training, officiating or emergency moments. Features and function Material: Stainless steel for strength, corrosion resistance and consistent performance. Sound: Two-chamber whistle design for a sharp, high‑volume tone useful in outdoor and indoor sports settings. Wearability: Built-in lanyard for immediate access and hands-free carrying; soft fiber prevents chafing during extended wear. Handling: Smooth, rounded edges and compact dimensions enable safe, easy handling for coaches, referees and athletes. Practical use scenarios Football matches and practices: Give unmistakable start, stop and foul signals that are audible across the pitch. School sports and indoor lessons: Clear, reliable calls in crowded gyms and during PE classes to manage drills and transitions. Emergency situations: Fast, attention-getting sound for alerting nearby people or directing attention when time is critical. Who this is for Coaches, referees and outdoor athletes who need a dependable, easy-to-carry signaling tool that performs consistently in demanding conditions. Specifications summary Material: Stainless steel Design: Two-chamber acoustic design Carrying: Integrated soft lanyard Size: Lightweight, compact for pocket or kit storage Dependable, comfortable and loud — a practical whistle for everyday sports use and emergency signaling.