Acme Thunderer | Official Referee Whistle

Make Your Signal Heard with the Acme Thunderer 

Perfect for coaches, referees, and trainers, this powerful whistle ensures unbeatable performance in any environment.

• Waterproof
• Easy blow - instant response
• The latest high tech research and development creates the advanced modern Thunderer.
• Independent laboratory tests have confirmed that it out performs even the closest copies.
• Finger grip whistles invented by ACME (1980's) are the original authentic and, due to constant development - unequaled in any field you choose