DoggSmarts Premium Bark Dog Collar Training System - Professional Electric No Bark Shock Control with 7 Adjustable Sensitivity Levels with Manuel, Free Extra Battery Included Safe and comfortable dog collar: You can be sure that your puppy will feel really comfortable, with its brand new bark control collar Train easily your pet: This high-quality electronic no bark dog collar sends harmless warning sound and shock to the dog whenever it barks New and improved high quality sensors: He sensor inside the device, cleverly gets the barking to stop and automatically reacts by vibrating gently Beeping only at the right time: Quite many other similar products tend to go off beeping uncontrollably