1. This anti-bark control device helps train good behaviour and reduce bad habits, like barking, digging, clawing, biting, scratching, and getting on furniture.2. Lightweight and portable, our handheld dog bark control system stimulates dogs through sound that humans can' t detect and won' t hurt the auditory sensors of pets or other animals for safer daily training.3. The Updated ultrasonic dog bark deterrent makes you handy when training your dog. Once the dog stops barking, the ultrasonic bark control automatically stops emitting ultrasonic sounds.4. Our ultrasonic anti barking devices provide a safe and effective solution for dog training and bark control.5. The small size of the Dog bark deterrent fits perfectly in the hand. You can carry it in your pocket.About This ItemSpecification:Power: USBInput Voltage: 3.7VInput Current: 40mAhBattery: 1500mAhWaterproof: IPX4Sound DetectionDistance: 16-33ftFrequency: 15KHZ-30KHZ