Features:Anti Bark Device - Our Best Anti Barking Device uses ultrasonic frequency that is harmless to pets and has no effect on human ears. This Humane Sonic Bark Deterrent professionally and effectively trains your dog to stop unnecessary barking.anti dog barking - Engineered with anti-smashing, durable, weatherproof features, our sturdy Bark Control device is lightweight with waterproof material. Thanks to IPX4 waterproof technology, it can withstand any weather conditions, making it an excellent Outdoor Dog Barking Deterrent.Ultrasonic Anti Bark - Our Stop Barking device can detect barks up to 50 feet away, effectively covering the area indoors and outdoors. It's designed for easy hanging/mounting on a tree, indoor, outdoor wall, fence post, lanyard, or anywhere to control dog barking.stop dog barking device outdoor- This USB rechargeable Bark Controller comes with an indicator light and can be used straight out of the box. A 2.5-hour charging time can last up to 30 days, saving you the hassle and investment in batteries.Adjustable Ultrasonic Level Control - Effortlessly adjust the intensity by moving the pointer. Our Dog Ultrasonic Anti Barking Device is suitable for small, medium, and large dogs, emitting harmless yet effective sounds to control excessive barking.