Acme Thunderer Official Referee Whistle - 60.5
The Acme Thunderer is a traditional and popular pea-whistle with a cushioned flexible finger-grip. It has a non-stick pea that can work in any weather condition , even if it is completely immersed in water. Unbeatable in strong winds, easily heard fluctuating frequencies that work at very low breath pressures. The Acme Thunderer has a solid sound that many referees prefer above other brands.