Automatic & Convenient: Compared with the traditional dog training collars, this Anti Dog Barking Device can automatically detect dog barking, emit ultrasonic and stop ultrasonic, which will completely free your hands to stop your dog or neighbor's dog barking.<br> 100% Safe & Harmless : The Stop Dog Barking Tool uses high-pitched ultrasonic technology, which will not cause any harm to humans or dogs. But it can grab dogs' attention easily and make dogs no more continuously and excessively dog barking.<br> Chargeable & Endurance: SiBei Anti Bark Device is equipped with a built-in 1500mAh rechargeable lithium battery that supports charging via USB cable. Fully charging only 5 hours can continuously work 30 days. ( Note: the output current is no more than 2A. )<br> Waterproof & Durable : The shell of this Dog Bark Stopper with sturdy ABS IPX4 waterproof, anti-smashing, weatherproof, sturdy, which gives the device a longer lifetime and can hang anywhere indoor and outdoor. (Need to take home when it rains heavily)<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store