• Acme Silent Dog Whistle (Model 535)

• Silent dog whistle by Acme with adjustable frequency to suit your dogs hearing - Almost inaudible to humans

• Great training aid - The whistle can be heard by dogs up to 400 yards

• Solid brass construction with nickel plating

• Acme is the leading quality brand for whistles - made in England

The first ever \"Silent\" Dog Whistle. Adjustable frequency to suit your dogs hearing.
Each whistle is individually tested and guaranteed.
Designed for your dog's sensitive hearing by Acme the inventors of the Silent Dog Whistle.
Acme is relied on by professional trainers world wide for over 130 years. Made in United Kingdom.

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Features:

• High pitch can be heard by dogs

• 400 yard range depending on conditions

• Pitch register for easy adjustments

• Measures four inches long

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Based on product reviews, we bought this whistle for ourselves and our dogs.​