Product Information: 

These devices can be effective in reducing excessive barking, their use should be approached with caution and care.  This device is intended to deter dogs from barking excessively, likely by emitting a stimulus or correction when it detects barking.  This suggests that the device aims to stop or "arrest" the behavior of barking, typically through training techniques rather than physical restraint.  Another method used in anti-barking devices is vibration. When the dog barks excessively, the device may emit a vibration, which can be unpleasant for the dog and serve as a deterrent.

Material: ABS.
Product category: collar
Specification (length * width) : 1 drag 1
Product name: dog trainer barker

Packing list   

Dog training is*1