ACME Genuine Silent' Dog Training Whistle No. 535 — Adjustable Frequency, UK-Made Solid Brass, Weather-Proof

ACME Genuine Silent' Dog Training Whistle No. 535

Designed and made in the United Kingdom by specialists with over 150 years of experience, this whistle blends heritage with practical field readiness. The solid brass body is finished in premium 24ct gold plating, offering a durable, refined look, and it can be found in multiple finishes to suit different tastes and environments.

The standout feature is the adjustable frequency, spanning from 5400 to 12800 Hz. With specially engineered air directors that tightly control the frequency, the device can project a clear signal over open spaces with minimal effort. This makes it a versatile tool for training outdoors where distance and ambient noise can affect cues.

There is also a quiet, human-audible confirmation sound. When you blow, you’ll hear a subdued tone in the human range, providing reassurance that the signal is active without startling bystanders or your dog. The whistle ships with an information leaflet that offers easy, step-by-step instructions so both new handlers and seasoned trainers can get started quickly.

In addition to its technical design, the whistle’s build emphasizes durability. The solid brass body, finished in 24ct gold plating, resists wear and adds a premium feel. The product is weather-proof, built to withstand rain, mist, or damp conditions during outdoor practice and walks.

Key benefits at a glance

• Adjustable frequency range 5400–12800 Hz for flexible cues across dogs and environments
• Special air directors and protective end cap for precise, long-lasting sound production
• Generates over a mile of sound in open spaces with minimal effort
• Quiet audible confirmation helps you verify function without disturbing others
• Solid brass body with 24ct gold plating, available in finishes to match your gear
• Weather-proof design suitable for outdoor use in varied weather
• Genuine ACME craftsmanship, UK-made by experts with deep experience
• Includes easy-to-follow information leaflet for quick setup

Practical usage ideas

• Recall training during walks or in parks where distance matters
• Outdoor practice in windy or noisy environments to test cue clarity
• Reliable, repeatable signal for both novice and experienced handlers
• Everyday training sessions that benefit from a calm, controlled tone

For dog owners seeking a dependable training aid, the ACME Silent' No. 535 offers a premium, practical option. It embodies a combination of heritage, precision engineering, and user-friendly design. While no tool guarantees results, this whistle provides a steady, repeatable cue that supports training routines with confidence in outdoor settings.