Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No battery life

Like the product, but as stated in other reviews the battery life is nonexistent. The collar batteries will only last 4 hours or so before shutting down - unacceptable!When it worked, it did break our dachshund from his bad behavior but we don't want him to associate the corrections with the collar so we wanted to leave the collar on and make the corrections as needed. Bad behavior in a puppy comes unexpectedly and you have to be able to correct without taking time to catch the pup, turn on the unit, then wait for a reoccurrence of the bad behavior. Bottom line: I wouldn't buy another!