Thunderer Whistle by Acme

High Tone
Recommended for anyone who is short of breath, as a safety whistle for the young and elderly. What is more this whistle has refereed F.A. & World Cup Finals!! Its power and reliability is proven with sales of over 30 million.

Deep Tone
Classic big Thunderer. Deep tone and loud made from Polycarbonate. Tough and bite resistant - longer life than standard plastics.