Acme Silent Dog Whistle 535 Adjustable

The Acme Silent Dog Whistle 535 is designed with special air directors to tightly control the frequency produced. It generates over a mile of sound with minimal effort.

Key Features

• * Suitable for all breeds with distance, medium and close work
• * Adjustable through a wide range of frequencies using a screw piston mechanism
• * Can be adjusted from 5200 to 12,800 Hz and is virtually inaudible to humans
• * Solid Brass, lasts for decades
• * The ultimate silent dog training whistle