ACME Alpha 210.5 Dog Training Whistle, Black on Day Glow Pink, 5700 Hz Recall Cue

The ACME Alpha 210.5 is a weatherproof dog training whistle designed to help call smaller dogs, with a standardized 5700 Hz frequency and patented sound chambers.

• 110 dBA sound output — provides a clear whistle call.
• Approximately 100-yard range (91 m) — supports calling at a distance.
• Developed over four years with World Champion dog trainers — shaped through specialist training collaboration.
• BPA-free, food-grade plastic with an ergonomic grip — supports comfortable handling and a soft feel in the mouth.
• Made and rigorously tested in the UK by specialists with over 150 years of experience — brings UK-made whistle expertise to training.

Consistent whistle cues can make everyday recall training easier to coordinate, whether you are working close by or calling your dog from farther away. The Alpha 210.5 is suited to Spaniels, Cockapoos, Dachshunds and other smaller breeds. Its standardized frequency is designed to give your dog a familiar signal even when different people take a turn blowing the whistle.

How does the Alpha 210.5 help with recall?

Its patented sound chambers use air efficiently to create a brighter sound, designed to support clear commands and a more responsive dog at close range and over distance. The whistle maintains a standardized 5700 Hz frequency, so the cue stays consistent when a partner, family member or dog walker uses a different-coloured whistle. This model is black on day glow pink.

• Standardized frequency: 5700 Hz.
• Suitable for Spaniels, Cockapoos, Dachshunds and smaller breeds.

What is the whistle’s range and sound output?

The Alpha 210.5 has an approximate range of 100 yards (91 m) and a 110 dBA sound output. Its sound chambers were developed through a four-year collaboration with World Champion dog trainers, with the aim of making whistle calls effective both nearby and at a distance.

• Patented sound-chamber design.
• Designed for close-range and distance calling.

What are its size, material and whistle design?

The whistle measures 3 in (7.8 cm) long, 0.5 in (1.3 cm) wide and 0.5 in (1.3 cm) high, and weighs 0.013 lb (6 g). It is made from BPA-free plastic to food-grade standards, with an all-over ergonomic grip for handling in different conditions. The whistle is weatherproof and uses a pealess, ball-free design with no cork.

• Compact 3 in (7.8 cm) length.
• Pealess construction: no ball and no cork.

This whistle is a practical fit for owners and handlers training smaller dogs who want a consistent recall cue that multiple people can use. Its compact size, ergonomic grip and weatherproof construction suit regular use in varied conditions, while the standardized frequency keeps the whistle signal familiar.