Bests & Worsts Reviews from Amazon

I will try and keep this short but I have a thousand good things to say about this product. I have a 15 month old German Shepherd puppy that is roughly 80lbs. He is stubborn and really loves to 'test' me. His energy level is what you'd expect for a dog of his age and his size times seventeen. He cannot be satiated by a walk and I can't run with him everyday due to knee problems. I have a nearby field where he could run and play if he was just able to heel when someone else came onto the field or walked by. He is extremely nice but most people freak out (which is expected when a GSD is charging at you) if he approaches them. I couldn't risk him jumping up on someone so we normally just took short walks and I dealt with his energy accordingly. I read the reviews here and bit the bullet after swallowing what seemed like a bitter $200+ pill. Boy was I wrong! I took my dog out once. One time. Just a single outing with this thing and his demeanor changed EVEN at home. Just make sure you have the collar VERY tight. My dog is tough so the first time I thought he wasn't feeling it and I continued to increase the intensity until the contacts touched his skin around Level: 70, which delivers a solid pop. I had gone up to 40 on my own arm beforehand. I have shocked myself at this level (70) afterwards to make sure I didn't really hurt him. It's not comfortable but it's nothing bad...especially for such a large animal. He wandered away from me and I called him back. He continued so he got the nick. It didn't stop him from running off from me so I switch over to constant (back down to level 25, where he is extremely responsive now) and held it for less than .5 seconds. He immediately stopped and looked at me. I called him back and he came immediately. I gave him tons of praise and that was it. That's the whole ordeal. I can take him anywhere now without a leash and I am in complete control. He responds to the device at just level 25 now and we are working on him learning the 'Page' feature so I can completely stop using the actual stimulation, though at this level it is not really any different than the vibration itself. The dog is far far happier and his energy level is lower now that we can spend 20 minutes with him in a solid sprint daily. His eating habits have improved and he is far less interested in people wandering around us. Now that's what most reviews of this product sound like but they don't actual review this PRODUCT, just the premise of the device. Yes, it works amazingly well and your dog will have behavioral improvement as a direct result of using it but that doesn't say anything about THIS dogtra product. So let me convince you to buy this one instead of the ones for sale at PetsMart and the like. This unit is built TOUGH. It's water resistant and comes in an extremely well packaged carrying case. I am a devices hardware engineer and I am not one that is easily impressed. This thing does it for me. It's going to last forever and it's easy to use. The buttons are not easy to press accidentally and the range has been tested to about 400 yards (half the advertised range) without a hiccup. The charge lasts forever and you can charge them both at the same time. The collar is durable and comfortable for the dog. Mine doesn't even notice it. You can easily change the intensity of the stimulus if your dog runs off and needs a REALLY good jolt, though I have had amazing results with just using constant for about 1s at a VERY low level in those situations, when necessary. After a few good zaps you won't have to worry about your dog roaming very far from you. --Can't say enough, this is just fantastic! EDIT: It has been roughly 3.5 years and I still use this product regularly for trips out to new areas. A few of my friends have borrowed it for a weekend and they always end up buying one themselves. I feel like I've gotten 5x the value of the unit by now and if anything happened I'd surely buy another and never look back. Wonderful, wonderful product.