The Acme 560 Thunderer is an official referee whistle, designed for use in a variety of sporting events. It's made from durable materials and has a powerful sound that can be heard clearly even in noisy environments. This whistle is also very easy to use, with a simple design that ensures a consistent sound every time. This particular model is made in the UK and represents a well-established product that has sold over 200 million units worldwide.
