Turbot No Bark Dog Training Collar Bark Control Training Collar with 7 Levels Adjustable Sensitivity HIGH QUALITY ANTI BARK COLLAR: This dog no bark collar is for 15-120 Lbs dogs. Effectively train your puppy and protect your it without harming or causing any pain. Stops unwanted barking with harmless static stimulus. The humane anti bark collars are very safe for your lovely friends! You can use on a daily basis. To save battery life take battery out of collar when the collar do not in use. VOICE INDUCTION: This remoted dog barking collar only sends harmless warning sound at first two barks, avoids a false correction. No Harm Warning Beep and shock!! ADJUSTABLE SENSITIVITY LEVEL: The bark collar have two modes :Beep sound and static shock with 7 levels. 7 sensitivity levels (1-7) adjustable for the different loudness of dogs barking and specific environments through the "+" /"-" button. EASY-TO-USE: This dog anti bark shock collar worked with a replaceable 6-volt battery. Simply slip it around your dog's neck and the system will automatically work. SUITABLE FOR DOGS OF DIFFERENT SIZES: Featured with an adjustable belt circumference from 11-19.1In, the dog no bark collar is effective on a 15-120lbs dog.