PRECISION-TUNED AT 6200Hz, THE SPANIEL SPECIALIST FREQUENCY: The ACME 210.5 Alpha is engineered at 6200Hz, the frequency proven to carry cleanly through dense woodland cover, hedgerow, and rough ground where Cocker Spaniels and English Springers work closest to the handler. Recognised across UK gundog training as the definitive close-work spaniel whistle, it is used daily at spaniel trials, on driven shoots, and in professional training kennels. PATENTED SOUND CHAMBERS, FULL VOLUME FROM A SINGLE CONTROLLED BREATH: ACME's patented dual-chamber design produces consistent, high-volume output without forcing a hard or strained blow. A relaxed, deliberate breath delivers a clean, repeatable tone every time, eliminating the volume inconsistency that undermines recall conditioning on long training days. SOFT-TOUCH ALPHA GRIP, SECURE IN WET, MUDDY AND GLOVED CONDITIONS: The moulded Alpha body features a textured, ergonomic grip engineered for field use. It holds securely whether you are working in shooting gloves on a cold November morning or bare-handed in summer drizzle. The form sits naturally between the fingers and will not slip mid-command. IDENTICAL PITCH ON EVERY BLOW, BUILDS RECALL FASTER: The 210.5 Alpha produces the exact same 6200Hz tone regardless of how hard or softly it is blown, and regardless of handler fatigue. A dog conditioned to a fixed, repeatable audio cue responds faster and more reliably than one trained to a whistle whose pitch varies with effort, this consistency is the foundation of effective recall training, making the ACME Alpha 210.5 dog whistle a top-rated dog training whistle for recall. OPTIMISED FOR SPANIELS AND COCKERS, WORKS WITH ALL BREEDS: Although tuned and recognised specifically for Spaniel and Cocker Spaniel training at 6200Hz, the consistent frequency of the 210.5 Alpha can be successfully used with dogs of all breeds and ages. Labradors, Golden Retrievers, HPR breeds, and crossbreeds all respond well to a clearly conditioned tonal cue. IDEAL FOR CLOSE-RANGE FLUSHING, QUARTERING AND DIRECTION WORK: The 210.5's frequency profile is designed to perform at the working distances relevant to spaniel fieldwork, from tight close-in direction commands to recall at up to 100 metres in cover. The tone cuts through wind and ambient noise at these distances without distorting at closer range. COMPACT AND POCKET-READY: Supplied without lanyard for handlers who prefer to carry their whistle in a vest, jacket, or trouser pocket. Accepts any standard ACME lanyard (available separately) for hands-free carry when required. PEALESS DESIGN, WEATHERPROOF AND RELIABLE IN ALL CONDITIONS: The 210.5 Alpha contains no pea mechanism that can freeze, stick, or produce variable output in wet and cold conditions. A pealess whistle delivers the same reliable command signal in driving rain, morning frost, and coastal wind, exactly the conditions working dogs and their handlers operate in. TRUSTED BY PROFESSIONAL GUNDOG TRAINERS AND FIELD TRIAL COMPETITORS: The 210.5 is among the most widely used frequencies on UK spaniel training grounds. Handlers at every level, from novice owners building a first puppy recall to experienced Field Trial Champions, rely on this ACME dog whistle 210.5 for its decades-long track record as a dog training whistle for recall and field sports. UK DESIGNED AND MANUFACTURED, ACME WHISTLES, BIRMINGHAM SINCE 1870: The 212 Pro-Trialer carries ACME's heritage of acoustic precision, manufactured in Birmingham to the same standards as the 210.5 and 211.5, extended to a lower frequency for wider-ranging field applications.