Product Description: Product Name: outdoor double head adjustable dog repeller Material: ABS Product size: 9.6 * 5.5 * 3.3cm Rated voltage: 3.7V Rated power: 1-3W Battery capacity: 950mah The product comes with a USB charging cable Features: 1.It is enough safe for your dogs, other pets and yourselves.You can hang it on a tree, wall or fence post easily to solve the barking of your dogs and your neighbor's dog. 2.Variable frequency, ultrasonic dog drive and cat drive, switch sound wave adjustment when the standard frequency of cats and dogs is not sensitive 3.Neighbors prevent harassment and people no longer have to worry about being quarreled by a dog and encountering danger. It can prevent evil dogs from chasing, biting, and harassing, and protect personal safety 4.This product is suitable for windows, corridors, balconies, warehouses, factories, greenhouses, orchards, villas, farms, restaurants, shops, garages and other places. 5.NEIGHBORS DON'T HAVE TO WORRY ABOUT DOGS ANYMORE Encounter danger to prevent vicious dog chase, bite,harassment,to protect personal safety 6.The waterproof bark control device is suitable for outdoor and all-weather days. It adopts the ultrasonic sound to stop excessive, noisy dogs barking, which is more effective.This device is rechargeable and it can be used for 1 month. working principle This product can perform adjustable ultrasound, which can generate ultrasound, which can effectively stimulate the nerve and auditory system of stray dogs, squirrels, weasels, etc. within the control range, causing discomfort and escape. Usage method ① This product uses rechargeable lithium battery. When it is used for the first time, it will be fully charged before use. The USB cable can be plugged into the charging port to charge. The red light is on and the green light is on when the product is fully charged. ② When the switch button is pressed, the ultrasonic wave starts to work, and the indicator light is on at the same time. When the product effect is not ideal, the sound wave can be adjusted appropriately to achieve a more ideal driving effect. Package Include: 1 x Dog Bark Controller 1 x USB wire Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it