HUMANE BARK COLLAR WITH 2 MODES - in 96% cases help decrease (eliminate) dog's barking by automatic performance with 7 safe stages of sound (beeps) and vibration. Beeps and vibrations are switching automatically based on the amount of dog's barking, increasing after each bark. RECHARGEABLE VERSION - no bark collar works about 14 days with 1 battery life. Get a full charge in 2-3 hours. ACTION WITHOUT REMOTE - The collar works in automatic mode, in which sounds and vibrations are combined to effectively and safely stop the barking. ADJUSTABLE FOR SMALL, MEDIUM AND LARGE DOGS - no shock bark collar is adjustable for dogs weighing 11 to 110 lbs with neck size of 9 to 22 inches. Adjust the strap according to the size of your dog. EXTRA PARTS - In addition to the automatic stop barking collar we have included extra strap, USB cable, 2 types of plastic prongs, and 2 color covers.