1. This electronic whistle produces a powerful 120-decibel sound, clearly audible even in noisy environments like sports games or traffic control, making it a reliable choice for refereeing and outdoor work. 2. It offers three different tone options, and a simple dial switch adjusts the volume to high, medium, or low, allowing you to customize the sound for any situation. 3. Pressing the sound button instantly activates the whistle, and releasing it stops it, providing easy and instant control without any delays. 4. Powered by three built-in AA batteries, it offers long-lasting battery life, extending use time and reducing the need for frequent battery changes. It's perfect for all-day activities or outdoor activities. 5. Designed with a detachable clip and woven wristband, it's lightweight and easy to carry, helping you keep it secure and easily accessible while moving around during sports or command duties. Material: ABS Size: 12.1 x 3.3 cm / 4.77" x 1.30" Color: As shown Package includes: 1pc Electronic whistle