This is a Premier Pet dog bark collar.
It is gray plastic with an adjustable nylon collar that adjusts to up to 28". It has 15 levels of static correction, and automatically adjusts to the correct level, using a 4LR44 battery (not included). This collar is for an 8-pound dog 6 months or older. The instructions are included.
The collar is in very good pre-owned condition with a open and torn box.