" Ultrasonic design: on the basis of the theory that a dog coach can effectively lead your dog to be obedient and prevent bad behavior such as barking, dig and chewing it. In addition, they are harmless For humans and pets, and sound can only be heard by pets. Easy to use: first open the battery cover, then insert the 9V battery (not included). Only animals can hear sound. Finally, turn on the switch and he can make his magic. If necessary, it can also be used as a flashlight. LED flashlight and the battery indicator: the super shiny LED flashlight function is very useful when walking or jogging at night, and can also be used as a battery indicator. Portable and comfortable: measures to prevent barking for ultrasound dogs approx. 12.5 x 4 x 2.5 cm (length x width x height), it can be easily put in a pocket. The prevention of the ultrasonic dog bark has a lanyard, which allows you to insert a stop of control of the dog bark Device where you need it, such as jogging or cycling, hiking,
