Whether you have a pup that enjoys persistent barking,or you would like to train your dog to stay in the yard,this electronic shock dog collar is the way to go.Control misbehaviors, nasty habits,or aggressive attitudes,eliminate barking after a few uses, and make dog training a breeze! Dogs in 30 seconds barking three consecutive dog collar will applies a shock to be a warning.After the conditional reflection is formed, it will stop barking after the first warning has occurred, which is a very effective mode of induction.Sensitivity can be adjustable, without harming or causing any pain,more safety. Also,our dog collars have adjustable buckles to ensure a comfy and perfect fit.Choose between the short or the long shock electrodes depending on your dog's coat. Each package includes 1 no bark receiver, 1 adjustable nylon collar, 1 test light, 2 long shock electrodes and 2 short ones, and a comprehensible English manual! Every Saturday is our Bestanx Brand Discount Promotion Day,waiting for your to visit our store!!!We provide NEW PET BRAND+HIGH QUALITY PRODUCTS+FASHION STYLE DESIGN+NICE PRICE+FAST SHIPPING+5 STAR AFTER-SALES SERVICE.