EFFECTIVE BARK CONTROL SOLUTION: This Ultrasonic Bark Deterrent utilizes advanced ultrasonic technology to calm and stop excessive barking. It automatically detects barking and emits a high frequency sound that is harmless to humans, effectively suppressing excitable and nuisance barking. HUMANIZED AND SAFE FOR DOGS:Our device uses gentle ultrasound to stop barking. With the adjustable frequency, you can find the most effective frequency according to your dog's sensitivity, ensuring a humane and personalized training process. Also promotes good pet behavior INDOOR & OUTDOOR MULTIFUNCTIONAL USE:This anti-barker has an adjustable working range of three stops for flexible coverage of areas around your home or yard. You can choose the setting that best suits your space requirements and prevents unwanted barking. -DETECTION TECHNOLOGY:Once activated, the device intelligently recognizes the sound of a barking dog and emits an ultrasonic pulse. This smart feature ensures that only the sound of your barking dog triggers the deterrent, preventing false triggers. CONVENIENT TYPE-C CHARGING:The built-in Type-C charging port allows for quick and easy charging, ensuring your device is always available. Please note that this product is not suitable for older dogs with hearing impairments or dogs with obedience training, as they may not accept ultrasound well.<br><br>Color: White Material: plastic<br><br>Package Contents: 1 * Ultrasonic Dog Repeller 1 * USB Cable 1 * English instruction manual<br><br>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.