Description: 【Safety And Effective】: Stop Barking Device can emit sound waves of 15khz to 30khz to interrupt dogs' barking without causing harm, for dogs 6 months and older, up to 15-50 feett range. Safety for human and animals. 【3 Gears Adjustable】: Barking stopper device, 3 gear adjustment, 15/20/30khz, you can choose suitable modes needs your dog. 【Outdoor Waterproof】: Dog barking control device design with IPX4 waterproof shell, suitable for indoor and outdoor, hanging on the tree, anywhere in the house, outdoor, garden, dog house, fence. 【Easy to install】: Comes with mounting screws, pre hole on the back, easy to install and hang. 【Friendly】: Barking Control Device, USB rechargeable, professional and nice way to train your dog to stop barking, keep your own dog or your neighbors dog from barking. Specification: Material: Abs Size Chart: 11.5cmx5.5cmx9cm/4.53inchx2.17inchx3.54inch.   Package Includes: 1 Stop Barking Device 1 USB Cable 1 Manual 1 Set Mounting Screws