Benefits: With malfunction prevention function, it is the best choice for homes with multiple dogs. Equipped with a large capacity battery that can be used for up to 14 days. Static shock mode or no shock mode can be selected. Can also be used for dogs with a weight of 14.9 - 148.9 lbs (6.8 To the Master: Thank you, Master I dont bark again, and I am sure to keep it quiet. your love dog