Airfast Pealess Referee Whistle. Small but with a punching 117dBA high pitch tone. Effective in all wethers. Measures 0.787 x 0.787 x 2.165 inches. Weight 0.013lbs. Made from high-quality BPA Free Plastic to Food Grade Standard. Comes packed in a blister pack with recycled cardboard and a 36% reduction in packaging. Used for Indoor Sports, including volleyball, basketball, futsal, floorball, indoor football, netball, and handball, plus Swimming. Can also be used as a Safety Whistle. Genuine ACME Whistle made in the UK by specialists with over 150 years of experience. Part of THE ACME range of high-quality whistles sold here on Amazon. Check out THE ACME store for more. The ACME 623 Tornado is a pealess referee's whistle that remains effective in all weathers. Using Airfast the ACME 623 Tornado may be small but produces high pitched tone of 117dBA. Produced in high-quality BPA Free Plastic to Food Grade Standard and available in a variety of colours. Used for Indoor Sports, including volleyball, basketball, futsal, floorball, indoor football, netball, handball, plus swimming. Can also be used as a safety whistles. Genuine ACME whistle made in the UK by specialists with over 150 years of experience.