Dog Stop Barking Control Collar Training Device Adjustable Ultrasonic Dog Anti Bark Collar For Small Dogs No Electric Shock Tool Supplies.

Features:
Ultrasound launch function, can have a role in the dog gently
Ultra-light shell, retractable neck strap, suitable for small dogs
Some dogs are effective for 7-14 days, most dogs will have 4-6 weeks to effect. A few dogs will take longer to be effective
Habits can not be changed, can only be replaced by another habit .
Some puppies stubborn, the effect may not be obvious.
Batteries not included.