Acme Thunderer Whistle with Adjustable Web Strap features a hand-polished solid brass construction, ensuring durability and a premium look. With high power and a medium pitch reaching 115 dBA, it delivers a big whistle sound with a deep tone. The tapered mouthpiece provides comfortable use and the adjustable web strap ensures a secure hold. This large Thunderer whistle is ideal for sports and outdoor activities, offering reliable performance in various conditions. It's easy to use and maintain, making it a valuable tool for any situation.