Dog Ultrasonic Anti Bark Device, Dog Training Bark Stopper Led Indicating Dog Stop Barking Device For Small Medium DogsHarmless and Effective Bark StopperThe bark stopper combines the functions of dog training and bark control. It picks up the barking of the dog in the area covered by the system and automatically emits ultrasonic waves. You can also train this anti bark dog to avoid harmful behaviors like barking, seeking and fighting. Stop Dog Barking Safely and HumanelyThe acute ultrasonic technology of this anti-bark device can only be heard by dogs. Once the device is turned on, it attracts the dog's attention without causing painful stimulation. Therefore, our anti-bark devices are safe and will not affect you or your neighbors. Easy Charging and InstallationThis ultrasonic anti-bark device has a built-in rechargeable lithium battery, which can be charged via USB cable, and can work continuously for 30 days after fully charged. Equipped with a wrist strap, you can hang the dog bark stopper on a tree, wall or fence to prevent your own or your neighbor's dog from barking. Waterproof, durable Barking Control DeviceThe bark control device is made of IPX 4 waterproof material, which is shatterproof, durable, weatherproof and strong, and can be used in various weather conditions indoors and outdoors . Make sure the bark controller is facing the dog and there are no obstructions. [Suitable for most dogs] Bark stoppers are suitable for most breeds and sizes of dogs, with the exception of dogs that are hard of hearing or less than six months old. Some dogs may be afraid or dislike the sound, as each dog's behavior and tolerance is unique, and each dog reacts differently to varying degrees and corrections, so use for up to 2 weeks. >