Anti-Barking Control Equipment, Ultrasonic Dog Barking Deterrent, Ultrasonic Muffler No-Barking Training Control  Human Pets Safe: Safe to your dogs of any size, other pets, plants, and of course yourself and your loved ones New Tech: Stop excessive, noisy dog barking by emitting an ultrasonic sound to silence the dog. More effective than old version deterrents and waterproof. Super Cute MiniI Design: The New Bark Controller come with a well-designed mini shape. Designed for easy hanging/mounting on a tree, wall or fence post to stop any dogs barking (within range). Highly Function: Contain sensitive microphone isolates and picks up barking up to 50 feet away to stop barking both outdoors and indoors (recommended starting mode for indoors is level 1, increase if needed). NOTE: Does not work on deaf or hearing impaired dogs Colour:brown Material:ABS Package Contents: 1 x Bark stopper Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.