100% Brand New.Weight: 44gSize: 6.5 x 6.5 x 1.2 cmWaterproof constructionAdjustable Stretch Collar ( Up To 35cm )Ultrasonic and Audible SelectionsOn/Off ButtonTriggers Accurately by Bark Vibration ( Can't activate by other dogs barking )The Anti Bark Collar needs time to work on the dogs. It takes 1-2 weeks to work on a few of dogs. It takes 4-6 weeks on most of the dogs. Even longer on some dogs.Package Content:1 x Ultrasonic New Bark Stop Control Dog Barking Collar2 x AG10 battery1 x English Manual