Acme 535 Silent Dog Whistle
No Whistle is truly silent. If it were nothing would be able to hear it! The word ‘silent’ is written in inverted commas because you can hear it, BUT only just. What your dog hears is really loud and travels up to 1.5km. Adjustable through a wide range of frequencies using a screw piston mechanism enabling you to tune it to suit your own dog, this is the most versatile whistle that can be used with all breeds.