Bark Control Device Ultrasonic, 3 Modes Automatic Anti Barking Device, Outdoor Indoor Dog Bark Deterrent with 33FT Range, Recharge Dog Barking Control Devices for Puppy Small Large Dogs (Blue)

【100% Safe & Harmless】: Our Anti Dog Barking Device uses high-pitched ultrasonic sound technology, which won't cause any harm to humans or dogs. But it can grab dogs' attention easily and make dogs no more continuously and excessively dog barking. 【Automatic & Convenient】: Compared with the traditional Dog Training Collars, this Stop Dog Barking Tool can automatically detect dog barking up to 50 feet range, emit ultrasonic to stop your dog or neighbor's dog barking, which is completely free your hands. 【 Waterproof & Durable 】: Our Dog Barking Deterrent Devices with PX4 waterproof, anti-smashing, weatherproof, sturdy, durable, lightweight, with the design of hang rope, which is suitable for use in anywhere of indoors and outdoors in any weather conditions. 【Rechargeable & Endurance】: Our Anti-Bark Device is equipped with a build-in powerful battery that supports charging via USB cable. A 5 hours full charge can continuously work for 30 days. Note: the output current is no more than 2A. 【 3 Levels of Frequencies 】: Our Dogs Bark Stopper has 3 different sensitivity levels, which is suitable for most sizes and breeds of dogs. ( 24KHZ for Small dog, 22KHZ for Medium dog, 20KHZ for Large dog ).