Sunbeam Advanced Static Bark Control Dog Collar Stop annoying barking with this safe and pet-friendly bark collar that detects when your dog barks Featuring the same technology used by professional trainers, this dog bark control collar measures noise and vibration to detect just your dog's barks, not those of other dogs Anti-bark device automatically emits a static pulse when it detects barking Control panel lets you set 3 correction levels to adjust for your dog's sensitivity; works for all breeds of dogs Made of comfortable, durable, fabric; easily fits neck sizes of 6 to 28 inches For training purposes only; not to be used more than 8 continuous hours Turns off when not in use; sleep mode extends battery life