This portable ultrasonic bark control device is designed to deter dogs from barking excessively. The compact size of 108mmx41mmx41mm and weight of 4oz make it convenient to carry around. The device features three ultrasonic sensors with a control range of 16.4-23FT, emitting ultrasonic frequencies of 25kHz fixed and 20-30kHz variable. It has a rechargeable battery with a capacity of 1200mAh and a standby time of 6 months. The black and orange ABS material device also includes an LED flashlight and can be charged using a Type-C charging mode. Suitable for all breeds, this anti-barking device offers a humane way to control excessive barking. It works. Smoke free home