The Genuine ACME No. 211.5 Dog Whistle, made from BPA-free plastic, delivers 110 dBA, making it perfect for long-range training of larger dogs. Producing a medium-high pitch, single note, this whistle is ideal for long-distance commands. Preferred by Labrador and Retriever trainers, the ACME No. 211.5 Dog Whistle ensures effective training across greater distances. Preferred by Labradors, Retrievers, Collies, Greyhounds. Offers a longer distance than the 210.5 model, approximately 450-500 yards. This is a lower pitch than the 210.5 whistle. Standardized Frequency: The ACME 211.5 maintains a standardized frequency, ensuring your dog recognizes your call. Choose a different color 211.5 whistle for your partner, family members, dog walker, or even to match an outfit for a special occasion knowing that your dog will respond to the whistle, whoever is blowing it! Weight 0.013lbs / 6g. Length 3.07 inches / 7.8cm. Width 0.51 inches / 1.3cm. Height 0.51 inches / 1.3cm. Pealess/ball free whistle. Made from BPA-free plastic to food-grade standards. Available in a wide variety of colors. Genuine Acme whistle made in the UK by specialists with over 150 years of experience. Care Instructions: Always ensure whistle is clean and free from dirt. Clean with warm water mixed with a small amount of disinfectant. Dry thoroughly with a clean lint free cloth.