Review on Rechargeable Dog Training Collar - 3 Modes: Beep, Vibration, and Shock, Waterproof Pet Behaviour Training for Extra Small, Medium, Large Dogs by Andrea Thomas

don't get me wrong, don't hate both because of the quality. I hate that we have a 6 month old puppy that gets aggressive towards people because he doesn't get to spend much time with them with everything that is going on. It got to the point where something had to be done. So we tried them. Now please don't hit the dog when it barks. That's not the point, we've only used it twice on the lowest shock setting. See for yourself how your dog feels. If you're hurt, imagine them. About properties. Pros: * Noise - it works, but every dog is unique, ours just chases after them, wondering where they came from. * Vibration - It vibrates and is great for getting her attention. But in our case of aggression, he just barks through it like he doesn't exist.* Shock - works, fast. We were very hesitant to use it but the 2 times we did it stopped. We felt terrible. But we cannot tolerate its jumping and biting humans. So use it sparingly. I took it to a level for him and slapped my arm, it even gets you. Therefore, never lift higher than necessary. * Auto power off is useful to conserve battery life. * Battery life is pretty good considering we use it sparingly. It lasts 2 weeks before recharging. *You can use this on any collar, you don't have to use them. Cons * I wish it was a more conventional charger like USB. But you get a special charger, so keep it where you know it. I'm scared of the day I lose him.