Precision machined in the United Kingdom from top quality chrome steel after which hand finished. Streamline shape to optimise the sound projection, giving great range of tones and high volume at distance. Has very fast turn out to be a favourite with professional sheepdog handlers and prefect for other dog sports and dealing dogs. Well balanced design making it simple to make use of. Very good sound, in a position to smooth low tones when the dog is close and very loud sharp whistle tones heard at distances over 1km or more. Advice on usage provided by Logan Whistles®.