Dogwidgets DW-11 Dog Bark Collar Advanced Electronic Anti No Bark Collar Dog Training Collar with High Warning Sound and Shock for 15 to 120 pounds Adjustable Sensitivity EFFECTIVE METHOD. Dog bark collar uses high pitch warning sound and shock to eliminate excessive barking behaviors. WORKS FOR ALL DOGS. Lightweight collar perfect for dogs from 20 to 120 pounds. ADJUSTABLE ADVANCED ELECTRONIC DOG BARK SHOCK COLLAR. Throat vibration sensor activation collar. Adjustable sensitivity from very low to very high to adjust to your dog's barking and environment. AUTO SHUT-OFF SAFETY FEATURE. Collar shuts off for 1 minute after the 7th correction to protect your dog. BEST CUSTOMER SUPPORT. Fast customer email and phone support with 6 months replacement warranty. BUY WITH CONFIDENCE.