Original & Genuine, the Thunderer Series is an Official Referee Whistle, the No.1 choice of Professionals, with over 200 million sold Worldwide.

• Small with a very high tone.
• Waterproof speed pea - works in rainstorms.
• Easy blow & Instant response
• Lead free
• The latest high tech research & development has created the modern Thunderer.
• Independent laboratory tests have confirmed that the Thunderer outperforms even the closest copies.
• Use by the NFL, FIFA, Olympics and many other World Class leagues.
• Relied upon by top officials for 130 years