Mockins - Collares de entrenamiento para perrosThe mockins Shock Collar is a great training tool for your dog. The dog bark collar can be used by first time trainers and professionals. The Dog Training collar is adjustable from 2' to 22" and is perfect dog collars for large dogs , dog collars for medium dogs and shock collar for small dogs . The dog training shock collar can be used to help with bark control , walking leash , behavioral obedience , training for sitting and more! No need to worry