Acme number 212 pro trailer whistle; dog whistle.

THE PROBLEM SOLVER: Designed as a reliable training aid with a medium pitch that remains audible. Engineered with a low-frequency 5200Hz tone that cuts through thick brambles, tall grass, and dense vegetation. Known for holding its frequency even when blown with force, it supports consistent sound cues. Recognised for use with dogs that may respond better to lower-frequency whistles. STABLE FREQUENCY CONSTRUCTION: Engineered to maintain a consistent frequency regardless of blowing pressure, this dog training whistle ensures clear, reliable command recognition even in demanding training situations. Highly responsive to varying pressure for nuanced silent or blast commands, and the professional choice for HPR (Hunt, Point, Retrieve) breeds working in rugged terrain. CONTROLLED SOUND PERFORMANCE: This whistle supports clear, steady signalling over distance. It is suited to structured training work and fits naturally within a practical kit of dog essentials used by an experienced dog trainer. Originally designed for challenging field conditions and hard-of-hearing dogs, the 212 is a versatile all-rounder. It is equally effective for everyday park walks with any breed, especially in windy environments or noisy urban areas. SUITED TO FIELD AND TRAINING ROUTINES: Often selected for work involving distance, distraction, or heavy cover, this whistle integrates easily into outdoor routines alongside trusted dog walking accessories. Designed for "challenging environments"; hills, valleys, and windy moors where standard whistles fail. UNRIVALLED PERFORMANCE, ICONIC DESIGN: Established in the 19th century, ACME has spent generations refining the art of sound signalling. Working dog whistles sit alongside professional, sporting, and safety applications, with every design reflecting depth of knowledge shaped through long-standing practice and continuous development across a broad range of uses.