Review on Rechargeable and Waterproof PetSpy Remote Dog Training Shock Collar with Beep, Vibration, and Electric Shocking - E-Collar Trainer by Molly Gunther

Benefits: Fits a 160lb Newfoundland pole. All three functions work very well. The functions come with 100 different intensity levels so they can be easily adjusted to suit your dog. The vibration function is really effective - a great alternative! The collar is easy to clean and charge. It is absolutely waterproof. The remote comes with a lanyard and is easy to hold, read and use. The keys glow in the dark and it is backlit. The remote control holds a charge for a very long time. Cons: It doesn't respond from time to time, so you have to hold down the button to "connect" it. *Don't do it with shock, by the way. I would have liked a bigger battery. The teeth are not long enough for a very thick coat. I would like to be able to set the intensity levels for the functions separately, but this is not possible.