Acme Thunderer 558 whistle

Black plastic version of the original and genuine Acme Thunderer, complete with it's famous deep, low tone. Tough and bite resistant - longer life than standard plastics Sound is as used by AFL (Australian Rules football) umpires. Made in UK with 130 years of whistle making experience Injection-molded polycarbonate plastic is lightweight and durable to last through games and practices Natural cork ball helps the whistle emit a highly audible trill to get the attention of players or spectators Waterproof speed pea which doesn't lose intensity when growing wet with saliva Unbeatable in strong winds and easily heard because of fluctuating frequencies Black finish for low-profile