Ultrasonic Dog TrainerWith the latest ultrasonic technology, the Wango Anti Bark Dog Trainer is suitable for dogs of all breeds and sizes , the ultrasonic frequency is harmless to pets and humans. It can be used as a dog repellent and a dog training aid tool to stop bad dog behavior such as endless barking, digging and fighting. Anti Bark Portable DesignThis dog bark control device is lightweight and fits your pocket perfectly, suitable for indoor and outdoor use. With a wrist strap, it was designed to be convenient to carry with you. Press the button of this bark control device, it will emit ultrasonic sound, and meanwhile, the green light will indicate the device is working, the red light will indicate the device needs to be charged. Rechargeable Dog Anti Bark DeviceOur newest version of ultrasonic dog bark stop device makes it easier to train your dog. Comes with the USB cable, the anti-bark stopper can be fully charged in 5 hours and can work continuously for 15 days. Compared with other similar products which require batteries, our products are more environmentally friendly and save money. Effective Dog Barking DeterrentThis control range of our anti bark device is up to 16.4 feet, emits 24kHz ultrasonic sound, and this sound does not affect dogs. humans (audibility limit of 20 kHz). With beep and ultrasonic sound, it can easily attract dogs' attention and improve their bad behaviors. Consistent training is necessary to achieve effective and lasting results. Advice and ServiceWhenever your dog commits mischief while barking, pulling on the leash, jumping, etc., simply press the button and point the ultrasonic dog training selector directly at him. Once he reacts positively, please praise and reward him to strengthen his memory. Product Description How to train your dog? The Wango ultrasonic anti-bark device will help you prevent or better control many problems and bad habits: excessive barking, chewing, digging, chasing, jumping, biting, aggression. When a dog barks, the pet owner should ignore their barking behavior, use the bark control device to intervene and correct the barking behavior of the dog. When you press and hold the button, the anti-bark device will immediately emit an ultrasonic sound. Wait until the dog is full nt calm, and after 3 minutes, give the dog appropriate rewards such as snacks, petting, etc., with positive guidance, reinforce the dog's memory. Please be patient when training. WORKS FOR ALL DOGS: Whether your dog is large or small, this ultrasonic anti-bark device is suitable for dogs of all breeds and sizes. Does not work on deaf or hard of hearing dogs. Features of this anti-bake device: - Uses ultrasound to deter unwanted barking. - Detects the sound of dog barking up to 16.1 m away, size 9.9 x 3.7 cm. - The safe and humane way to stop dog barking. - Bicolor LED indicates good (green light) or low battery (red light). - Built-in rechargeable battery and comes with USB cord. Ultrasonic Dog Training Tips For best results, please u Use the device by pointing your dog directly. Each dog may have a different reaction to the correction they receive from the training device.