Dog trainer here. I use E-Collars and I know the model that he is using very well. That is not the Vibration model. That is the ET-300, more specificly that is the RX-090 receiver. The vibration model is much slimmer due to fewer internal components. You can't mistake the two. Hasan is a bold face liar and made a mistake in how he used the E-Collar and should have admitted it when it happened. I'd like to assume he made a mistake or else the alternatives are he was taught incorrectly or he knows better and still uses it that way. Also the comments are all wrong. Go speak with a professional dog trainer if you care to get educated. E-Collars are not bad. As a matter of fact e collars are far more humane than the gentle leaders that a lot of people go to when they are anti ecollar. I have never owned a dog or worked with a dog that is afraid of the E-Collar. My dogs get excited when I get their E-Collars out because they are more associated with adventures than pain. Have I made dogs yelp while using them? Yes, but not because they stepped off of their place cot, because they were very dangerously chasing cars or something extreme like that. Something that could get them killed if it was not corrected in a timely manner. Don't hate the E-Collar because it's getting misused, hate the trainer that is misusing it. And stop using gentle leaders.