Quality Function:With scientific design and good quality control, this product will not cause physical or mental harm to your dog, while showing excellent function. Can be used to help correct barking , leash walking, sitting, aggression and other behavioral obedience. Bidirectional Charging Device The collar and remote are rechargeable. Train your dog easily in the park or yard. Adjustable Collar for All Dogs:The shock collar is made of superior material; it is soft and comfortable for your dogs. for electrical, vibration, light and sound stimulation. Durable TPU Adjustable collar length Suitable for small, medium and large dogs Anti Lost Night Light:Turn on the light and easily find the lost puppy > Safe and Cruelty-Free: Anti-bark collar controls barking by vibration and sound, make sure your dog’s health is our number one priority and would never produce a product that harms your dog.