Thunderer 577 Referee Finger Whistle by Acme Whistles

Thunderer 577 Referee Finger Whistle by Acme Whistles

This internationally renowned tough, loud square mouthpiece whistle with a deep sound is  perfect for players to hear whether during practice or in the game. 

Features:

• Shatterproof and bit resistant, high impact plastic
• Big whistle, deep tone with 115dBA
• Comes with fully adjustable finger grip