Come and see our amazing products. The dog collar is suitable for small, medium and large dogs. Length of the conductive probe cover can be changed, and can be replaced according to the length of the dog hair. 5 Adustable Sensitivity Levels, effectively detect barkings of all size dogs. It helps your dog understand that barking is not desirable. You can correct your dog's behavior with this training barking collar. Contains an integrated rechargeable battery. Pls confirm with us about the packing info, stock color and exact production time before placing your order.