HUMANE-FRIENDLY AND GENTLE BARKING CONTROL SOLUTION: This advanced ultrasonic bark control device uses sound waves to stop excessive barking without causing harm to your dog; Built-in microphone detects barking and triggers ultrasonic waves to help reduce unwanted noise. CUSTOMIZABLE FOR DIFFERENT DOGS: Tailor the bark box's response to your dog's needs, with three adjustable intensity settings (high, medium, low), you can customize the dog barking deterrent's response to your dog's size and temperament; High intensity for larger or more persistent barkers, medium intensity for moderate barkers, and low intensity for smaller dogs; The dog bark silencer covers up to 33 feet, making it flexible enough for a variety of environments from home to garden. EASY TO SET UP AND OPERATE: The ultrasonic bark deterrent is simple to install - just hang it on the fence, tree or wall where your dog is most likely to bark; Its compact and lightweight design makes it easy to use without complicated wiring. With an IPX4 waterproof rating, it can withstand light rain and outdoor conditions, ensuring reliable operation indoors or outdoors. Long-lasting working time: This bark stopper is powered by a 1500mAh rechargeable battery, which can run for up to 30 days on a single 5-hour charge. Suitable for specific types of dogs: This bark stopper is best suited for a single dog, and is not recommended for multiple dogs at the same time, aggressive dogs, or puppies under 6 months old; it is also ineffective for dogs with hearing impairments; for best results, it is ideal for breeds such as Golden Retrievers, Beagles, Bulldogs, Boxers, etc. Note:Due to different factory batches, slight differences in appearance colors will not affect the use. Colour:Black Material:Plastic Package Contents: 1 * Anti Barking Device Only the above package content, other products are not included. Note: Light reflection 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.