Bought this for my Lab who needs help remembering not to jump on everyone who enters my home, barks at the wind and runs after EVERY squirrel. I love that this collar has Beep/Vibration/Electric Shock Modes so I can give a warning beep with vibration, It took a very shourt time for her to learn that after the beep would come a shock and it helped correct bad behavior quickly and easily. Great product and great price and happy with the results.