This collar makes pet training easy. The high pitched tones, inaudible to humans, reinforce commands and dramatically reduce training time by omitting gentle but irritating negative stimulus when the dog barks, thereby calming the action. The collar requires one 9v battery

Safe, Humane and Effective

Deters barking with a high frequency whistle

Simple to use

This amazing gadget is a must have for anyone who lives in an apartment or quiet living area!