Referee Whistle - Essential Sports Equipment for Fair Play #65198 (License: Personal Use)

This grayscale illustration depicts a traditional pea whistle, featuring a rectangular mouthpiece, a central wind chamber with a sliding pea, and a rounded resonating bulb. The design ensures a sharp, high-pitched tone that cuts through noise, making it ideal for officiating sports or emergency alerts. Its simple, robust construction has remained largely unchanged for over a century due to its effectiveness.

This image is typically used on sports equipment retail pages, coaching resource sites, or educational content about officiating tools. It matches user intent for purchasing, identifying, or learning about whistles used in athletics, training, or safety protocols.