"Product Details2015 New Version PT853anti-bark collar with the most intelligent system.Never mis-judge your dog's behaviorThe PT853 Bark Control Collar is controlled by a microprocessor which distinguishes your dog’s bark from other environmental noises and automatically delivers ultrasonic and/or static shock after each bark.The collar can effectively and humanely stops barking when it is worn on dogs with weight around 25-150 LBS.Technical Details:Humane, cost-effective and harmless to your dog.Compact, lightweight and non-obtrusive in appearance.Delivers increasingly louder warning tones and shock corrections of 7 levels.Sensitivity is user-adjustable according to your dog’s barking and specific environments.Voice recognition minimizes false triggering.Operates on a standard 6 volt alkaline battery ( INCLUDED).Product description:This anti-bark collar is a training device that helps reduce or eliminate your dog’s nuisance barking. It will deliver warning tones and adjustable shock corrections in direct response to your dog’s barking. Eventually your dog will learn to associate his barking with the unpleasant sounds and shocks so that he will stop or significantly reduce his nuisance barking. This humane approach to bark control is as easy as pie yet will prove amazingly effective and impressive.Upon your dog's first bark, this anti-bark collar will emit a short warning tone. If your dog barks again within 30 seconds, a louder warning tone will sound. Then if your dog continues barking within another 30 seconds, a even louder warning tone will be issued along with a mild shock, the first and lowest level of correction.There are a total of 7 levels of correction that will be triggered by your dog’s successive barks. Each successive bark will increase the correction level if the bark is within 30 seconds of the previous bark. If your dog does not bark for at least 30 seconds the collar will resets itself. As a built-in safety feature, if the correction reaches the seventh level, the collar will shut off automatically for approximately 1 minute.For level 1~2, only warning tones will be issued; for level 3~7, warning tones are issued first and static shocks will ensueBy pushing the button “sensitivity down” or “sensitivity up”, you can adjust the collar’s sensitivity to your dog’s bark and the environment in which your dog lives. Push “sensitivity up” to increase sensitivity and push “sensitivity down” to decrease.Package Content:1 X collar1 X Belt(62cm/24inch in length)2 Sets of probes(long and short)1 X User Manual12 Month Warranty"